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Bad Request Request too long HTTP Error 400. The size of the request headers is too long.
Help me please, I have logged myself out of my admin, microsoft exchange, onedrive and outlook on my microsoft 365 F3 profile (owa?). I get the message Bad Request Request too long HTTP Error 400. Th...
I have the same issue. It started when my manager overlooked renewing my company permissions. Now I get it when I try to logon in Outlook, Teams or Onedrive. Cleared all Chrome cookies and uninstalled Teams and reinstalled all with no fix.
I have tried clearing my cache in my Browser. Re-installed outlook but nothing helps. Any resolution?