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Pro Tips

How to Fix Error 0x80070091 on Windows 10/11

I. Introduction

  • Brief definition of error code 0x80070091
  • Impact of this error on users

II. Main Causes of Error 0x80070091

  • Corrupted system files
  • Misconfigured registry
  • Conflicting applications
  • Hard drive issues

III. How to Fix Error 0x80070091

  • Run SFC scan
  • Reset Windows Update components
  • Uninstall recent updates
  • Check hard drive for errors
  • Repair registry issues
  • Update or reinstall drivers

IV. Preventing Future Occurrences of 0x80070091

  • Keep Windows updated
  • Don’t install incompatible software
  • Maintain your hard drives
  • Backup system periodically

V. Conclusion

  • Brief summary of error and fix
  • Note about contacting Microsoft support
How to Fix Error 0x80070091 on Windows 10/11

If you are a Windows user, you may have encountered the error code 0x80070091 when trying to install updates or run certain applications. This frustrating error essentially means that Windows was unable to correctly process files, leading to a failure in the requested operation.

The 0x80070091 error typically displays the message “Invalid argument/parameter” and prevents you from updating Windows, installing new programs, modifying settings, or even launching apps. Understandably, this error can significantly impact your productivity and user experience.

In this guide, we’ll cover the main causes of the 0x80070091 error code and the most effective solutions to resolve it on Windows 10 and Windows 11. By the end, you’ll be able to fix error 0x80070091 and prevent it from returning in the future.

What Triggers Error 0x80070091?


There are a few common culprits behind error code 0x80070091:

Corrupted System Files: The Windows system files can become corrupted over time, often due to invalid shutdowns, hard drive errors, or conflicting software installations. Damaged system files cause problems when Windows tries to access them.

Registry Issues: The Windows registry stores system configurations and settings. If these registry entries get corrupted or changed incorrectly, critical system processes may fail with error 0x80070091.

Incompatible Applications: Installing outdated or incompatible software can modify registry keys and system files incorrectly, leading to conflicts and errors. The 0x80070091 error often arises after installing problematic apps.

Hard Drive Problems: If your system drive is corrupted or damaged, Windows may be unable to correctly read/write crucial files, resulting in read/write errors like 0x80070091.

If any of the core Windows system files become inaccessible due to these issues, you’ll encounter the ambiguous 0x80070091 error. Now let’s look at the steps to resolve this error on your system.

How to Fix Error Code 0x80070091 on Windows

  1. Run SFC and DISM Scans
    The System File Checker (SFC) scans Windows system files for corruption and replaces damaged files. You can run SFC scan to fix error 0x80070091 with these steps:
  • Open the Command Prompt as admin
  • Type “sfc /scannow” and hit Enter
  • Restart your PC once the scan completes

You can also run the Deployment Image Servicing and Management (DISM) tool to repair system image files:

  • Open Command Prompt as admin
  • Type “DISM /Online /Cleanup-Image /RestoreHealth” and hit Enter
  • Please await the completion of the scan before rebooting your computer.

These scans will replace corrupt system files that may be responsible for the 0x80070091 error.

  1. Reset Windows Update Components
    As error 0x80070091 often occurs when installing updates, you can try resetting the Windows Update components to default settings:
  • Open Command Prompt as admin
  • Input the command “net stop wuauserv” and then press the Enter key.
  • Following that, input “net stop cryptSvc” and then press the Enter key.
  • Now type “net stop bits” and press Enter
  • Lastly, enter “net stop msiserver” and then press the Enter key.

This will stop the Windows Update services. Now type the following commands (pressing Enter after each) to re-register the Windows Update files and folders:

  • “Ren %systemroot%\SoftwareDistribution SoftwareDistribution.old”
  • “Ren %systemroot%\System32\catroot2 Catroot2.old”

Restart your PC after running these commands. This should reset the Windows Update components and resolve any issues that were causing the 0x80070091 error.

  1. Uninstall Recent Updates
    If the 0x80070091 error started appearing after a particular Windows update, uninstalling that latest update may fix the issue.

To uninstall updates:

  • Navigate to Settings > Update & Security.
  • Click on View Update History
  • Select Uninstall Updates
  • Find the latest update and select Uninstall
  • Restart your computer once the update has been removed

This should undo any registry/system file changes made by the problematic update.

  1. Check Hard Drive for Errors
    As mentioned before, hard drive corruption can also manifest as error code 0x80070091. It’s good practice to periodically scan your system drive for any logical or physical errors.

To scan for drive errors:

  • Open Command Prompt as admin
  • Input the following command: “CHKDSK C: /f,” and then proceed by pressing the Enter key.
  • Type “Y” if prompted and let the scan run
  • Restart your PC once it completes

This will scan drive C: and repair any bad sectors or file system errors. Consider replacing your hard drive if the scan reveals excessive drive damage/corruption.

  1. Repair Registry Issues
    Corrupted registry files can also trigger error 0x80070091. You can use the SFC scan mentioned previously to automatically restore altered registry files.

Alternatively, you can manually re-register core .dll files using these Command Prompt commands (as admin):

  • regsvr32 %systemroot%\system32\normaliz.dll
  • regsvr32 %systemroot%\system32\softpub.dll
  • regsvr32 %systemroot%\system32\wintrust.dll
  • regsvr32 %systemroot%\system32\initpki.dll
  • regsvr32 %systemroot%\system32\dssenh.dll
  • regsvr32 %systemroot%\system32\rsaenh.dll
  • regsvr32 %systemroot%\system32\gpkcsp.dll
  • regsvr32 %systemroot%\system32\sccbase.dll
  • regsvr32 %systemroot%\system32\slbcsp.dll

Restart your PC once done for the changes to take effect.

  1. Update or Reinstall Drivers
    Outdated and broken drivers can also sometimes trigger runtime error 0x80070091. It’s recommended to update your drivers to the latest available versions, especially for critical components like storage controllers, GPU, chipset etc.

You can update drivers automatically using Device Manager or manually from your hardware manufacturer’s website. Reinstalling problematic drivers can also help resolve driver-related issues causing this error.

Block chain

Blockchain Security Secrets

Recent popularity of cryptocurrency and digital assets has changed how we deal and manage our finances. With rising use, we need strong security to secure our digital riches from cyber attacks. Blockchain technology, which is decentralised and unchangeable, may solve these security issues. Our blog post will provide blockchain security secrets and practical advice to help you understand and secure your bitcoin and digital assets.

I. Blockchain Security Basics

Blockchain technology basics are essential to understanding blockchain security. Blockchains are distributed ledgers that record transactions across several computers or nodes. This decentralised network is resistant to manipulation and censorship since no one controls it.

Blockchain security relies on cryptography. Secure transactions and digital asset security depend on cryptography. For data encryption, identity verification, and data integrity, cryptographic techniques and protocols are used. The combination of cryptography and blockchain technology provides strong security.

Digital asset protection also requires private key security. Private keys are cryptographic codes that unlock blockchain-stored digital assets. Preventing cryptocurrency theft requires safeguarding these private keys.

II. Crypto Transaction Security

Crypto transactions must be secure to prevent theft or unauthorised transfers. Best practises can greatly improve transaction security.

Secure transactions begin with trusted wallets and exchanges. Select secure wallets and exchangers with good customer reviews. Before giving a wallet or trade your digital assets, check their validity.

Review all transaction details before completing. Check the recipient’s address and transfer amount to avoid errors and fraud. Verifying the information prevents phishing attacks and sending money to the wrong address.

Crypto transaction security also requires encryption. Encrypting transactions protects transferred data. Encrypting transactions keeps data illegible if intercepted.

III. Blockchain Vulnerability Protection

While blockchain technology is secure, it has flaws. Safeguarding your digital assets requires understanding these risks and implementing mitigation techniques.

Securing Smart Contracts

The blockchain stores self-executing smart contracts with predefined rules and circumstances. They are subject to security breaches if not properly secured. Smart contracts are vulnerable to coding flaws, reentrancy attacks, and unchecked external calls.

Smart contract security audits are necessary to mitigate these risks. Use skilled auditors or automated technologies to check the contract’s code for weaknesses. Smart contracts are audited before deployment to ensure proper operation and minimise exploitation risk.

DApp Security

Decentralised apps (DApps) are prevalent across industries. However, greater usage requires strong security. Security threats for DApps include unauthorised access, malicious code injection, and data leakage.

Secure development best practises can improve DApp security. These include user authentication, input validation, and vulnerability updates and patches. DApps built with standardised and validated smart contracts reduce security risks and provide secure functionality.

Blockchain Vulnerability Analysis

To find and fix security holes in blockchain networks, vulnerability analysis is essential. Blockchain vulnerabilities can be assessed using several methods.

Penetration testing, or ethical hacking, simulates real-world attacks to find blockchain network weaknesses. Additionally, vulnerability scanning technologies can automatically scan the network for known vulnerabilities and offer mitigation.

Vulnerability study suggests that patching vulnerabilities, updating software, and applying security measures can increase blockchain defences.

IV. Enhancing Blockchain Defences

Consensus Algorithms: PoW vs. PoS

Blockchain network security depends on consensus methods. PoW and PoS are the most popular algorithms. Each algorithm has security pros and cons.

Since mining additional blocks requires processing resources, PoW is secure. It requires energy and is vulnerable to 51% attacks. To validate transactions, PoS participants must own a stake in cryptocurrency. While more energy-efficient, PoS algorithms may be attacked by huge stakeholders.

Community participation is essential for blockchain network security. Users assist secure networks and prevent malicious activity by participating in consensus processes.

Blockchain Data Integrity and Immutability

Blockchain technology ensures record integrity and security through immutability. The blockchain makes it practically difficult to change a transaction.

Data privacy on a visible blockchain is difficult. While transaction details are public, critical data must be protected. Blockchain and privacy-enhancing technologies like zero-knowledge proofs, ring signatures, and sidechains can balance openness and privacy.

Blockchain Transaction Verification and Audit Trails

Blockchain audit trails promote transparency and accountability. They let users trace transactions and check records. Many methods exist for confirming public and private blockchain transactions.

Anyone may verify transactions on public blockchains by checking transaction history and confirmations. However, private blockchains may require permissioned access for transaction verification to ensure only authorised participants may check and verify transactions.

New transaction verification methods like zero-knowledge proofs allow transaction details to be verified without revealing the data. These privacy-preserving methods improve security, secrecy, transparency, and auditability.

Blockchain security is crucial for cryptocurrencies and digital asset protection. You may improve blockchain security by understanding blockchain technology, securing crypto transactions, defending against vulnerabilities, and strengthening defences.

For security, use reputable wallets and exchangers, verify transaction information, and encrypt transactions. Perform smart contract security assessments and DApp development best practises. Blockchain network vulnerability investigation and patching are advised.

You may secure blockchain networks by engaging in consensus processes and adopting privacy-enhancing technologies. Blockchain security is crucial for cryptocurrency, digital assets, and transaction safety. To keep ahead of risks, follow blockchain security developments.

SEO

A Simple Guide to Contextual Internal Linking

Internal links are a crucial part of SEO that are often overlooked. Contextual internal linking refers to linking to other pages on your website in a meaningful, relevant way that adds value for users. In this comprehensive guide, we’ll cover everything you need to know about leveraging contextual internal links to improve your website’s structure, usability, and search engine rankings.

We’ll discuss what contextual linking is, why it matters, how to create an effective internal linking strategy, best practices, and more. Whether you’re new to technical SEO or looking to level up your skills, this in-depth blog post will help you master contextual internal linking.

What is Contextual Internal Linking?

Contextual internal links are links that connect relevant pages on your own website. They act as pathways guiding users deeper into your content, unlike external links which lead users away from your site. By linking contextually, you’re creating a better user experience and sending signals to search engines about the topic of each page.

Contextual internal links use relevant anchor text and are placed naturally within the content. For example, if you mention a specific product, you would link to the product page using anchor text like “hat” rather than something generic like “click here.” This provides context for search engines and users. The best contextual links enhance the content rather than feeling forced.

Why Contextual Internal Links Matter for SEO

Contextual internal links are important for both user experience and SEO. They allow you to optimize the way search engines crawl and index your pages. Contextual linking creates relationships between topics, helping search engines understand your content meaning. It also reduces dependency on the homepage for ranking power. Well-placed contextual links distribute “link juice” throughout your site.

This allows more pages to rank, rather than just your homepage. Internal links also increase pages’ chances of ranking for specific keywords by linking relevant pages together around a topic. Most importantly, contextual internal linking improves usability. It guides users to more information and resources naturally within your content.

How to Plan Your Internal Linking Strategy

Developing an effective internal linking plan takes time and effort. Start by setting clear goals. What pages do you want to rank, and for what terms? Conduct keyword research to identify high-value targets. Next, map out your website’s structure and content. Look for logical connections between topics to link together. Avoid narrow, deep silos in your site architecture. Build a site-wide linking strategy that supports ranking goals and provides the best user experience.

Best Practices for Contextual Internal Linking

When creating contextual internal links, keep these best practices in mind:

  • Choose descriptive, useful anchor text relevant to each page
  • Link to high-quality, informative content
  • Vary your anchor text – don’t over-optimize with keywords
  • Link deeper into your content, not just home and category pages
  • Place links naturally within paragraph text, not bunched together
  • Link to supporting resources mentioned in your content
  • Check for and fix any broken links
  • Avoid linking pages with no relevant connection
  • Use links to connect silos and improve site cohesion
  • Monitor link building efforts and iterate based on analytics

By following these best practices for contextual linking, you’ll maximize the SEO benefits while providing a better user experience.

Optimizing Anchor Text for Contextual Links


Anchor text is the clickable text of a link. It’s a key way to indicate relevancy between two linked pages. Effective contextual linking uses descriptive, natural anchor text tailored to each page. Avoid generic anchor text like “click here”, which offers no context to users or search engines. Instead, use keywords when relevant, but vary them. Over-optimizing with a keyword as anchor text on every link looks unnatural.

Use partial keyword phrases and synonymous terms to diversify your anchor text. Also consider formatting anchors with italics or bolding to make them stand out on the page. But don’t go overboard. Anchor text should blend into the content around it. By optimizing your anchor text for relevance, you’ll improve contextual linking and avoid penalties.

Link Placement Tips

Where you place contextual links matters too. Links buried at the bottom of a post will have less impact. Integrate internal links naturally within paragraph content to maximize value. Don’t bunch links together either. Spread them out so each link gets full “juice” versus diluting it. Place contextual links:

  • Near relevant anchor text
  • In the introduction and conclusion
  • Next to keywords/phrases they describe
  • Near related resources the reader may want

Be thoughtful about link placement when designing content to ensure your contextual links get clicks.

By now you should have a solid understanding of what contextual internal links are and why they are vital for SEO. With an effective internal linking strategy built around relevance and quality content, you can enhance user experience while also improving search rankings. Focus on creating natural, useful contextual links. Place them thoughtfully, choose keyword-rich anchor text, and monitor your efforts. Link building is an ongoing process, so continuously improve and iterate using analytics.

Remember to avoid common mistakes like over-optimization and inadequate anchor text. If you dedicate time to contextual internal linking best practices, you’ll see great results driving organic search traffic and boosting conversion rates. Use this comprehensive guide as a resource to master one of the most important yet overlooked aspects of technical SEO. Now get out there and start building high-quality contextual internal links!

Alternatives

Canva Alternatives for creating professional designs

Discover the perfect design companion: Unleash your creativity with these top-notch Canva Alternatives!

Canva is a popular online graphic design platform that offers a wide range of features, including templates, fonts, and images, to help users create professional-looking designs. It is known for its ease of use and affordability, making it a popular choice for both beginners and experienced designers.

Unlock your design potential: Explore the world of professional design with these incredible Canva Alternatives!

There are many great Canva alternatives out there, each with its own strengths and weaknesses. The best one for you will depend on your specific needs and budget. Here are a few popular options to consider:

Free and freemium options:

  • Adobe Express (formerly Adobe Spark): Offers a user-friendly interface and access to Adobe’s extensive library of fonts and templates. Strong for social media graphics and presentations.
  • Visme: Great for creating infographics, reports, and presentations with advanced data visualization tools. Offers a generous free plan.
  • VistaCreate (formerly Crello): Boasts a vast collection of templates and a simple drag-and-drop interface. Perfect for social media posts and basic design needs.
  • Stencil: Ideal for social media marketing with its focus on quick and easy content creation. Offers a limited free plan.
  • Snappa: Strong for creating social media graphics and ads. Free plan allows you to create unlimited designs, but with limitations.
  • Piktochart: Excellent for creating infographics and data visualizations. Free plan offers basic features.
  • PicMonkey: Offers powerful photo editing tools alongside basic design capabilities. Great for creating YouTube thumbnails and social media graphics.
  • Pixlr: A browser-based image editor with both basic and advanced editing features. Offers a free plan with limited features.
  • Fotor: A user-friendly photo editor with a good selection of design templates. Free plan available, but with limitations.
  • Design Wizard: AI-powered design tool that helps you create stunning visuals with minimal effort. Offers a free trial.

Other factors to consider:

  • Features: What types of designs do you need to create? Some tools are better for specific types of content, such as infographics or presentations.
  • Ease of use: If you’re a beginner, you’ll want a tool with a simple and intuitive interface.
  • Collaboration: Do you need to be able to collaborate on designs with others? Some tools offer better collaboration features than others.
  • Price: Many tools offer both free and paid plans. Consider what features you need and how much you’re willing to spend.

Adobe Creative Cloud – Adobe offers a full creative suite of graphic design, photo editing, video editing, etc. tools. Their flagship products like Photoshop, Illustrator and Premiere Pro are industry standards but more complex than Canva.

PicMonkey – Another online graphic design tool similar to Canva. Offers templates, stock photos, basic layout and editing features. Easier to use than Adobe tools.

Placeit – Specializes in product mockups and visualizations. You can overlay designs onto photos of products, people, etc.

Visme – Focuses on infographics, presentations and visual explanations. Offers templates and options to build intricate visual diagrams and flows.

Venngage – Known for social media graphic templates. Lots of pre-made templates for Facebook/Instagram posts, cover photos, etc.

DesignEvo – Emphasis on designing logos, icons and branding graphics. Auto-generating design options using AI.

Piktochart – Professional looking infographics, charts and reports. Intuitive interface for communicating data visually.

Crello – Large library of templates for social media, flyers, presentations and more. Drag-and-drop editor.

Smore – Makes branded email newsletters, curriculums and digital portfolios. Kid-friendly teacher resources too.

Design Pickle – Comprehensive service that also offers custom graphic design work via their network of freelancers.

So in summary, PicMonkey, Venngage and Crello are Canva’s most direct competitors while tools like Adobe, Visme and Piktochart target more specific design categories.

Deals

Flipkart Big Billion Days Sale 2023 Everything You Need to Know

Flipkart Big Billion Days:

Flipkart Big Billion Days is one of the biggest shopping festivals in India. It is a week-long event that offers the best deals on electronics, fashion, home and kitchen, beauty and personal care, and kids and baby products. The event is held in September or October every year.

What to expect on Flipkart Big Billion Days

Flipkart Big Billion Days offers a wide range of deals on products from all major brands. You can expect to find discounts of up to 80% on popular products. The event also features exclusive deals and offers that are not available at any other time of the year.

How to make the most of Flipkart Big Billion Days

Here are some tips for making the most of Flipkart Big Billion Days:

Plan your shopping list in advance. This will help you save time and avoid impulse purchases.
Create an account on Flipkart and add your payment details. This will make it easier for you to checkout quickly and easily.
Compare prices on different websites before making a purchase. Flipkart is not the only website that offers deals on Flipkart Big Billion Days. You can also find good deals on Amazon, Myntra, and other websites.


Use Flipkart Plus membership to get early access to deals and discounts. Flipkart Plus is a paid membership program that offers a number of benefits, including early access to deals and discounts on Flipkart Big Billion Days.
Keep an eye on Flipkart’s social media pages for latest updates on deals and offers. Flipkart regularly posts updates about deals and offers on its social media pages.
Here are some of the best deals to expect on Flipkart Big Billion Days 2023:

Electronics: Smartphones, laptops, TVs, refrigerators, washing machines, etc.
Fashion: Clothing, footwear, accessories, etc.
Home and kitchen: Furniture, appliances, etc.
Beauty and personal care: Makeup, skincare, hair care, etc.
Kids and baby: Toys, clothes, diapers, etc.

Here are some tips for shopping on Flipkart Big Billion Days:

Be prepared for heavy traffic. Flipkart Big Billion Days is a very popular event, so the website is likely to experience heavy traffic. Be patient and keep trying if you are unable to access the website.


Please utilize the search bar to locate the desired products.

This is the quickest and easiest way to find the products you want.
Read the product descriptions carefully before making a purchase. This will help you avoid buying the wrong product.
Compare prices on different websites before making a purchase. Flipkart is not the only website that offers deals on Flipkart Big Billion Days. You can also find good deals on Amazon, Myntra, and other websites.


Use a credit card to make your purchases. This will give you buyer protection in case you receive a defective product or do not receive your order at all.

Flipkart has partnered with leading lenders Axis Bank, ICICI Bank, and Kotak Mahindra Bank to offer a range of benefits on their credit and debit cards during the Big Billion Days Sale. Customers can receive instant discounts, offers on purchases, and more when they pay with co-branded credit cards, EMI transactions, Paytm, UPI, or other wallets.

For example, ICICI Bank, Axis Bank, and Kotak Mahindra Bank credit cardholders will receive an instant 10% discount on their purchases, up to a maximum of Rs 1,500. Flipkart Axis Bank Credit Card holders will also receive an instant 5% discount and an additional 5% unlimited cashback.


Flipkart Big Billion Days is a great opportunity to grab some amazing deals on your favorite products. By following these tips, you can make the most of this shopping festival.