400. That’s an error. The server cannot process the request because it is malformed. It should not be retried. That’s all we know.

I can no longer access my gmail email account on Safari before and after it was updated.


I tried on Chrome and was able to get in. However, I don't regularly use Chrome and would like to continue accessing my email using Safari.


I cleared cache, cookies, upgraded iOS, restarted computer and removed extensions. Help please

iMac (2017 – 2020)

Posted on Nov 2, 2023 3:58 PM

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Posted on Dec 19, 2023 7:58 AM

I was able to fix this problem by going to Safari > Settings > Websites > Content Blockers and change “When visiting other websites” to “Off.” Also, clear all cookies/website data just to be safe.


At least in my issue, it seems that Safari was blocking Google’s authentication requests which led to the 400 error. When I changed that setting, it worked for me. Google uses multiple domains to authenticate (including google.com and youtube.com, and there may be others; I’m not sure). So it’s easier to just turn Safari’s content blocker off than try and find every possible domain Google uses to allow them all manually.


After successfully logging in, you can re-enable your content blocker again.

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400. That’s an error. The server cannot process the request because it is malformed. It should not be retried. That’s all we know.

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