Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Əgər kömək lazımdırsa lütfən yeni sual verin.

can't login to office 365

vicki15
vicki15
more options

Can log into office 365 with MS Edge and the outlook desktop app. logging into Office 365 results in a 500 error and too many redirects error. Have run anti-virus, cleared all history, cache and a Refresh. Advanced uninstall of Firefox and reinstalled, still can't login.

Can log into office 365 with MS Edge and the outlook desktop app. logging into Office 365 results in a 500 error and too many redirects error. Have run anti-virus, cleared all history, cache and a Refresh. Advanced uninstall of Firefox and reinstalled, still can't login.

All Replies (2)

vicki15
vicki15 Question owner
more options

more data on the 500 error page: clientIPAddress 70.59.24.67 X-ClientId: 3E64525F1AD44F0EB6F087F21FAFCF42 X-Redir-Error ArLym14BP4L5cM192wg|AmWPg2YB3d5NcM192wg|ArLym14B6Tngb8192wg|AmWPg2YB85U0b8192wg|ArLym14BegO7bs192wg|AmWPg2YBHaDrbc192wg|ArLym14B7CJmbc192wg|AmWPg2YBhoK6bM192wg|ArLym14BmRZIbM192wg|AmWPg2YBGZqja8192wg|ArLym14BEFU4a8192wg|AmWPg2YBqKCYas192wg|ArLym14BXvcqas192wg|AmWPg2YBBGxzac192wg|ArLym14B_df5aM192wg|AmWPg2YBxSzeZ8192wg|ArLym14B0jpDZ8192wg|AmWPg2YBLS8lZs192wg|ArLym14BR5JaZc192wg|AmWPg2YBNtNiZM192wg|ArLym14BhDmlY8192wg X-FEServer DS7PR05CA0010 Date:7/6/2023 3:02:32 AM

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
more options

This is a guess, based on the multiple redirects:

Firefox recently rolled out "Total Cookie Protection" to more users. This limits how sites can use "third party" or "cross-site" cookies, meaning cookies from different websites than the one you see in the address bar. Some sites pass you back and forth between different servers during login because they have their services spread out over a number of different servers. In those cases, you might be able to submit a form successfully on one page and then the next page says you are not logged in. Frustrating!

You can make exceptions to this feature when needed (for each server that you visit as part of the process of using this company's services). More info in the following articles:

Any difference?