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Can't log in to Gmail in Firefox 67.0.4 (64-bit) 400 error message

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Have tried safe mode, fresh install of Firefox. I can login using Chrome and Edge without a problem. I may have tried to change privacy and security settings and I am wondering if that is the problem and what is the fix. Many thanks in advance.

Have tried safe mode, fresh install of Firefox. I can login using Chrome and Edge without a problem. I may have tried to change privacy and security settings and I am wondering if that is the problem and what is the fix. Many thanks in advance.
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額外的系統細節

已安裝的外掛程式

  • Shockwave Flash 32.0 r0

應用程式

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:67.0) Gecko/20100101 Firefox/67.0

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jscher2000
  • Top 10 Contributor
8758 個解決方法 71665 個答案

Hi Bloogle, what happens when you try to sign in? Do you get the usual two part sequence (gmail address, then password), and then get redirected to the service where you started? Or instead of getting to your mail you end up back at login?

I may have tried to change privacy and security settings and I am wondering if that is the problem and what is the fix.

Check your cookie settings. This article will point you to the ones that usually cause issues: Websites say cookies are blocked - Unblock them.

Any difference?

Hi Bloogle, what happens when you try to sign in? Do you get the usual two part sequence (gmail address, then password), and then get redirected to the service where you started? Or instead of getting to your mail you end up back at login? <blockquote> I may have tried to change privacy and security settings and I am wondering if that is the problem and what is the fix.</blockquote> Check your cookie settings. This article will point you to the ones that usually cause issues: [[Websites say cookies are blocked - Unblock them]]. Any difference?
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Thank you so much. It was driving me nutty. The link in your reply was invaluable, although the list of allowed sites contained https://google.com and https://mail.google.com was not listed anywhere as blocked or allowed. I added it and market allowed, and that did the trick. Sorry for the delay in getting back to you – we were away, but sincere thanks again.

Thank you so much. It was driving me nutty. The link in your reply was invaluable, although the list of allowed sites contained https://google.com and https://mail.google.com was not listed anywhere as blocked or allowed. I added it and market allowed, and that did the trick. Sorry for the delay in getting back to you – we were away, but sincere thanks again.
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nancykmiller54 0 個解決方法 1 個答案

I can't log into gmail using Firefox. It just doesn't load. Chrome works fine.

I can't log into gmail using Firefox. It just doesn't load. Chrome works fine.
這篇文章有幫助嗎?
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jscher2000
  • Top 10 Contributor
8758 個解決方法 71665 個答案

Hi nancykmiller54, how far do you get? For example, do you get the sign-on page for entering your username and password? Does that submit successfully?

Then it should redirect back to your inbox. Do you get stuck on a blank page, or is there a partial load, or is there an error message?

Does it make any difference to use a direct link:

https://mail.google.com/mail/#inbox


If you are getting a blank page after entering your login, please make sure the redirect block is turned off:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk.

(2) In the search box above the list, type or paste access and pause while the list is filtered

(3) If the accessibility.blockautorefresh preference is bolded and "modified" to true, double-click it to restore the default value of false


If a site is generally known to work in Firefox, these are standard suggestions to try when it stops working normally:

Double-check content blockers: Firefox's Content Blocking feature and extensions that counter ads and tracking may break websites that embed third party content (meaning, from a secondary server).

(A) Do you see a shield icon toward the left end of the address bar, near the lock icon? More info on managing the Tracking Protection feature in this article: Content blocking.

(B) Extensions such as Adblock Plus, Blur, Disconnect, Ghostery, NoScript, Privacy Badger, uBlock Origin or uMatrix should provide toolbar buttons to manage blocked content in a page. There may or may not be a number on the icon indicating the number of blocked items; you may need to click the button to see what's going on and test whether you need to make an exception for this site.

Cache and Cookies: When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.

(1) Clear Firefox's Cache

See: How to clear the Firefox cache

If you have a large hard drive, this might take a few minutes.

(2) Remove the site's cookies (save any pending work first). While viewing a page on the site, click the lock icon at the left end of the address bar. After a moment, a "Clear Cookies and Site Data" button should appear at the bottom. Go ahead and click that.

In the dialog that opens, you will see one or more matches to the current address so you can remove the site's cookies individually without affecting other sites.

Then try reloading the page. Does that help?

Testing in Firefox's Safe Mode: In its Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is not running: Hold down the Shift key when starting Firefox. (On Mac, hold down the option/alt key instead of the Shift key.)

If Firefox is running: You can restart Firefox in Safe Mode using either:

  • "3-bar" menu button > "?" Help > Restart with Add-ons Disabled
  • (menu bar) Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement?

Hi nancykmiller54, how far do you get? For example, do you get the sign-on page for entering your username and password? Does that submit successfully? Then it should redirect back to your inbox. Do you get stuck on a blank page, or is there a partial load, or is there an error message? Does it make any difference to use a direct link: https://mail.google.com/mail/#inbox ---- If you are getting a blank page after entering your login, please make sure the redirect block is turned off: (1) In a new tab, type or paste '''about:config''' in the address bar and press Enter/Return. Click the button accepting the risk. (2) In the search box above the list, type or paste '''access''' and pause while the list is filtered (3) If the '''accessibility.blockautorefresh''' preference is bolded and "modified" to true, double-click it to restore the default value of false ---- If a site is generally known to work in Firefox, these are standard suggestions to try when it stops working normally: '''Double-check content blockers:''' Firefox's Content Blocking feature and extensions that counter ads and tracking may break websites that embed third party content (meaning, from a secondary server). (A) Do you see a shield icon toward the left end of the address bar, near the lock icon? More info on managing the Tracking Protection feature in this article: [[Content Blocking]]. (B) Extensions such as Adblock Plus, Blur, Disconnect, Ghostery, NoScript, Privacy Badger, uBlock Origin or uMatrix should provide toolbar buttons to manage blocked content in a page. There may or may not be a number on the icon indicating the number of blocked items; you may need to click the button to see what's going on and test whether you need to make an exception for this site. '''Cache and Cookies:''' When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site. (1) Clear Firefox's Cache See: [[How to clear the Firefox cache]] If you have a large hard drive, this might take a few minutes. (2) Remove the site's cookies (save any pending work first). While viewing a page on the site, click the lock icon at the left end of the address bar. After a moment, a "Clear Cookies and Site Data" button should appear at the bottom. Go ahead and click that. In the dialog that opens, you will see one or more matches to the current address so you can remove the site's cookies individually without affecting other sites. Then try reloading the page. Does that help? '''Testing in Firefox's Safe Mode:''' In its Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem. ''If Firefox is not running:'' Hold down the Shift key when starting Firefox. (On Mac, hold down the option/alt key instead of the Shift key.) ''If Firefox is running:'' You can restart Firefox in Safe Mode using either: * "3-bar" menu button > "?" Help > Restart with Add-ons Disabled * (menu bar) Help menu > Restart with Add-ons Disabled and OK the restart. ''Both scenarios:'' A small dialog should appear. Click "Start in Safe Mode" (''not'' Refresh). Any improvement?
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