Brave and Grammarly have stopped liking each other

This is an odd one.

Yesterday, Brave was working perfectly fine with Grammarly.
Today, Brave and Grammarly don’t like each other.

Grammarly keeps telling me that I’m not logged in, even though I am and tries to redirect a new login to Chrome, which I don’t actually use.
There are other behavioral issues with Grammarly as well, which are difficult to describe.
I downloaded and installed Chrome, and Grammarly works perfectly with Chrome.

Has an update gone through lately that has “upset” Grammarly, or is this a Grammarly issue?

Are there settings I should use to work with Grammarly?


Because of the accurate timing of your observation, my guess is that the recent Chromium update to v134.0.6998.178, is the probable cause of “Brave and Grammarly” having a sudden disagreement.

Brave Browser being updated to 1.76.82 in order to include that Chromium update ← updated by Chromium because of CVE-2025-2783:

Brave CVE-2025-2783 exploit update

Will the update be pushed out as part of Brave’s normal updates?

Someday, a subsequent update - taking into account some issues caused by BB v1.76.82 (Chromium v134.0.6998.178) - will come along, I expect.


I would test your issue, by:

  • disable anti-virus
  • disable ALL of extensions that you have installed

In a Brave Browser New Window, go to:

  • brave://settings/clearBrowserData Advanced tab

Time range: All time

ENABLE:

  • Cookies and other site data
  • Cached images and files

Click Clear data


Exit / Quit everything, and restart the computer.

Then install the Grammarly extension and test.


Sometimes, the order of installation of extensions, matters.

Sometimes, the installation of any anti-virus extension in last place, fixes things. And sometimes, installing an ad-block extension BEFORE that anti-virus extension, matters.


Well, as mysteriously as it broke, it has now mysteriously fixed itself.

Grammarly now appears to be working with Brave once more.

I have no idea why.

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And just like that, today, Grammarly is broken again!
The exact same problem as before.
It was working perfectly okay yesterday.

Nothing is changing with Brave, maybe re-install Grammarly? else check the subreddit or Grammarly forums

Yeah, I think that Grammarly themselves have broken it.
According to Grammarly, they do not support the Brave Browser.
So, it’s all on Grammarly and they don’t seem to care.

@MichaelBlucher

May interest / might work / and another maybe . . .

Does Grammarly use subprocessors?

https://support.grammarly.com/hc/en-us/articles/360036884632-Does-Grammarly-use-subprocessors

Grammarly (including Coda) engages certain third-party vendors (i.e., subprocessors) listed below to help us operate, provide, improve, integrate, customize, and support our services when we process Customer Personal Data (as defined in our Data Privacy Addendum) on behalf of our business customers.

The table below identifies Grammarly’s subprocessors, details the purpose of their services, and server location. The subprocessors we engage may change from time to time and we may add or remove subprocessors in the future. We will post updates to our subprocessors on this page.


I reviewed that table of Grammarly’s subprocessors, and made a list of the domains / hostnames for the entire, current list.

In order to use Grammarly, I would ALLOW JavaScript for each of the 27 following domains / hostnames; and make sure that none are blocked by some firewall or DNS service:


  • amazon.com
  • aws.com
  • awsstatic.com
  • awswaf.com
  • azure.com
  • azure.microsoft.com
  • coda.io
  • discourse.org
  • firebaseapp.com
  • firebaseio.com
  • fivetran.com
  • google.com
  • googleapis.com
  • gmail.com
  • gstatic.com
  • hightouch.com
  • iframely.com
  • imgix.com
  • intercom.com
  • iterable.com
  • maestroqa.com
  • openai.com
  • rollbar.com
  • scania.com
  • sumologic.com
  • twilio.com
  • zendesk.com


NOTE: Microsoft Azure Data Center Regions:

https://blog.purestorage.com/purely-educational/where-are-the-azure-data-center-locations/
United States has 10 Microsoft data center regions


NOTE ABOUT: Civilized Discourse Construction Kit, Inc. (discourse.org):

https://blog.codinghorror.com/civilized-discourse-construction-kit/
Written by, Jeff Atwood, Co-founder of Stack Overflow and Discourse
(Discourse is the supplier of the Brave Community forum’s software package.)


NOTE ABOUT: Coda Mode - Internal analytics and debugging

That might run afowl of:
Brave Browser Privacy & Security
Brave Shields
. . . and require some tuning, of those settings, is my guess.



Just note, shields ads&trackers doesn’t protect you at extension level. If Grammarly has lots of 3p trackers, I would personally avoid it. Probably doesn’t help with memory or battery usage either.

1 Like

Yeah, I know nothing about Java

@MichaelBlucher

JavaScript is not Java.

Your issue is intermittent.

Could happen, because your IP address online (Wide Area Network “WAN” IP address), changes. (Happens also, when using a VPN.)

Could happen, because sometimes the browser and the webservers manage to establish a reliable-enough connection and session. Or, sometimes, not.

Tips regarding Brave Shields:

I have more success, with:

  • Brave Shields UP
  • Either Allow All Cookies or Block 3rd Party Cookies, but NOT Blocking All Cookies
  • Allowing JavaScripts from specific sources, but NOT Allowing All JavaScripts
  • Trackers & Ads treatment: Aggressive (at first), and then incrementally relaxing that setting
  • Fingerprinting (aka footprinting) blocking: Strict (at first), and then incrementally relaxing that setting

I almost NEVER use:

  • All of Brave Shields UP
  • All of Brave Shields DOWN

Shields Basics

https://support.brave.com/hc/en-us/categories/360001053072-Shields

How do I configure global and site-specific Shields settings?

https://support.brave.com/hc/en-us/articles/360023646212-How-do-I-configure-global-and-site-specific-Shields-settings

How do I use Shields while browsing?

https://support.brave.com/hc/en-us/articles/360022806212-How-do-I-use-Shields-while-browsing


Unfortunately, I don’t know anything about JavaScript either.

Note:
Brave Browser has this issue.
Chrome and Firefox work perfectly.
The problem is that Grammarly does NOT support Brave.