FIX: Grammarly won’t work on Windows 10 browsers

by Matthew Adams
Matthew Adams
Matthew Adams
Windows & Software Expert
Matthew is a freelancer who has produced a variety of articles on various topics related to technology. His main focus is the Windows OS and all the things... read more
Affiliate Disclosure
  • Google Chrome is an amazing web browser, but it isn't always compatible with all web apps.
  • For example, users reported having difficulties using Grammarly through the web browser.
  • To read more about Grammarly and other similar tools, visit our dedicated Web Apps Hub.
  • If you want to know more about Internet browsers, we also have a dedicated Browsers page.
fix grammarly windows 10 browser

How to fix Grammarly bugs on Windows 10

  1. Use Grammarly on a different browser
  2. Check browser compatibility
  3. Update your browser
  4. Reduce the document length
  5. Turn off third-party antivirus software
  6. Turn off the Windows Defender Firewall
  7. Clear your browser’s cookies
  8. Reset your browser

Grammarly is a SPAG checker for documents that you can utilize within a browser. It checks documents more extensively than your average word processor, which might just be limited to a spell checker.

However, the Grammarly editor doesn’t always work in some Windows 10 browsers. This is how you can fix the Grammarly web app if it isn’t working for you.

How do I fix Grammarly issues on Windows 10?

You can use this troubleshooting guide to fix the following Grammarly issues:

  • Grammarly script error
  • Grammarly troubleshooting
  • Grammarly editor is loading
  • Grammarly won’t install/ open
  • Grammarly won’t let me sign in
  • Grammarly won’t connect to server
  • Grammarly doesn’t show suggestions
  • Grammarly crashes when checking documents
  • Grammarly unexpected error 400/ 403/ 407 / 429
  • Grammarly not working / grammarly isn’t working
  • Grammarly is not working in Outlook, Google Docs, Google Chrome, Firefox
  • Grammarly not working in chrome / grammarly chrome extension not working

Of course, this list of Grammarly errors and problems is not an exhaustive one. You can use this troubleshooting guide to fix other Grammarly issues as well.

1. Use Grammarly on a different browser

This issue may also occur due to browser incompatibility issues. The quickest method to check if this is the case is to simply test Grammarly on a different browser.

If you don’t know what browser to install on your PC, we recommend Opera.

This browser is excellently optimized for various hardware and software configurations. This virtually eliminates the risk of experiencing any browser compatibility problems.

As a matter of fact, we’ve been using Grammarly on Opera for a few months now and we didn’t encounter any issues whatsoever.



Enjoy error-free writing with Grammarly by using this amazing and highly-compatible web browser.

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2. Clear your browser’s cookies

  • First, click the Customize Google Chrome button to open the browser’s menu.
  • Select Settings to open the tab shown directly below.
  • Scroll down to the bottom of the page tab and click Advanced.
  • Select Clear browsing data to open the options shown directly below.
  • Select the Cookies and other site data option.
  • In addition, select Cached images and files setting to clear the cache.
  • Press the Clear data button.

Additionally, it’s likely to use third-party tools if you need to free up the memory, clearing all the cookies from the browser instantly.

You can as well benefit from software that erases cache or temporary files stored on your PC, and schedule to do it regularly. To proceed with all that, it’s advised to use the best cookie cleaner software.

Our grammar robot is recharging is another Grammarly error message that you might see upon opening the editor. That error message can be due to corrupted cookie files. Thus, clearing cookies might fix Grammarly.

3. Check browser compatibility

Grammarly doesn’t work in every browser. In fact, it is only compatible with five browsers. Google Chrome, Firefox, Safari, Internet Explorer and Edge are the five browsers that support Grammarly.

Thus, the editor isn’t much good for Opera, Maxthon or Vivaldi users. So switch to one of the compatible browsers if required.

4. Update Your Browser

  • Click the Customize Google Chrome button at the top right of the browser’s window.
  • Select Help to expand its submenu.
  • Then click About Google Chrome to open the tab shown directly below.
  • Google Chrome will then check for updates and update automatically. To finish the updating the browser, press the Relaunch button.

Grammarly isn’t compatible with every Chrome, Explorer, Edge, Safari and Firefox version. So outdated versions of those browsers aren’t compatible with the editor either.

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As such, make sure you’re utilizing the latest browser versions to ensure compatibility.

5. Reduce the document length

If you can’t upload a document to Grammarly, it might be the case that the file eclipses four MB. Four MB is the maximum file size for documents you can upload to Grammarly. Also note that you can’t upload documents with more than 60 pages.

Reducing the document’s length will remove pages from it and cut its file size. Consider saving half of your original document in a separate file if it currently eclipses the maximum page number for Grammarly.

Then you can probably upload both halves of the document to Grammarly separately, and merge them together again after editing them.

6. Turn off third-party antivirus software

The Grammarly server relies on WebSocket connections. Your third-party antivirus utility might be blocking WebSockets if you see a Grammarly error message that states, Error checking is temporarily unavailable.

AVG, Avast, Browser Guard, Bitdefender, Pokki, ZoneAlarm Firewall, and Internet Download Manager are a few of the antivirus packages that block WebSockets.

As such, temporarily turning your antivirus software off might fix the Error checking is temporarily unavailable error. To disable an antivirus utility, you can usually right-click its system tray icon and select a disable or turn off the option.

Alternatively, have a look through the antivirus utility’s settings tab on its primary window to select a disable setting from there.

7. Turn Off the Windows Defender Firewall

Some firewalls can also block WebSockets and Grammarly internet addresses. Thus, temporarily turning the Windows Defender Firewall off before you open Grammarly in browser might also fix “Not connected” notifiers that pop up within its editor.

That will ensure WDF isn’t blocking the editor in any way. This is how you can switch off the Windows Defender Firewall in Win 10.

  • Press the Type here to search button on the taskbar to open Cortana.
  • Enter the keyword ‘Windows Firewall’ in Cortana’s search box, and select Windows Defender Firewall to open its Control Panel applet.
  • Click Turn Windows Defender Firewall on or off to open the settings shown directly below.
  • Select both the Turn off Windows Defender Firewall network settings there, and click the OK button.

8. Reset your browser

Grammarly compatibility issues can also arise from browser extensions and plug-ins. So removing browser add-ons is another potential fix for Grammarly not working.

The quickest way to do that is to reset your browser, which will remove (or at least disable) all its extensions. Furthermore, that will clear browsing data, which can also fix Grammarly error messages.

Follow the guidelines below to reset Google Chrome:

  • Enter chrome://settings/ in Chrome’s URL bar, and press the Return key.
  • Click Advanced to expand the Settings tab.
  • Scroll to Reset and clean up at the bottom of the Settings tab.
  • Click Restore settings to their original defaults to open a Reset settings box.
  • Press the Reset settings button to restore Chrome to its original configuration.

So updating your browser, turning antivirus software and the Defender Firewall off, reducing document lengths, and erasing browser cookies will probably fix most Grammarly web app errors.

Remember that there’s also an alternative Grammarly desktop app for Windows 10 you can download from this page. If the Grammarly web app still doesn’t work, you can always utilize the desktop software alternative instead.

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