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New computer firefox opens and immediately goes to a google error page

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On a new computer, when I open firefox it goes to my homepage but immediately opens a new page which says Google 401. That’s an error.

Error: deleted_client

The OAuth client was deleted. Request Details

That’s all we know.

Does not happen on any other computers

On a new computer, when I open firefox it goes to my homepage but immediately opens a new page which says Google 401. That’s an error. Error: deleted_client The OAuth client was deleted. Request Details That’s all we know. Does not happen on any other computers

All Replies (3)

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Type about:config<enter> in the address bar. If a warning screen comes up, press the Be Careful button. At the top of the screen is a search bar. Type browser.startup.homepage

What is the value? Right-click and select Reset to restore its default value; about:home

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This issue can be caused by corrupted cookies or cookies that are blocked.

Clear the cache and remove the cookies from websites that cause problems via the "3-bar" Firefox menu button (Options/Preferences).

"Clear the cache":

  • Firefox -> Preferences -> Advanced -> Network -> Cached Web Content: "Clear Now"

"Remove the cookies" from websites that cause problems.

  • Firefox -> Preferences -> Privacy -> "Use custom settings for history" -> Cookies: "Show Cookies"
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It might just be an obsolete/broken page, but I'm a little bit worried about that message.

There was a phishing scam recently involving a fake Google Docs app that users would inadvertently authorize to access their Google account data. More info: https://www.vox.com/new-money/2017/5/3/15534984/google-docs-phishing-hack

To check apps that have permission to access your Google account, see: https://support.google.com/accounts/answer/3466521