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Cannot Login to 8x8 Meet for Outlook 365 Using Chrome [RESOLVED]
8x8 Support

Cannot Login to 8x8 Meet for Outlook 365 Using Chrome [RESOLVED]



When logging in, using the 8x8 Meet Outlook 365 in Chrome or Chromium-based browsers, users might get an error similar to below. The issue does not occur with other non Chromium browsers at this time.

{"timestamp":1585250571828,"status":401,"message":"Callback state param doesn't match server state","messageKey":"user.authentication.failed","path":"/sso/eight/callback"}



Applies To

  • 8x8 Meet
  • Outlook 365
  • Chrome
  • Chromium-based browsers


The root cause of this issue was addressed by 8x8 Engineering to ensure the add-on works with Chrome's default configuration as of 6/7/21 and is now resolved.

Other non Chromium browsers were not impacted and continue to function without additional modification.


This was due to a previous Chrome update, which enabled the SameSite cookies flag by default.

The previous workaround was to disable that flag:

  1. Open a new tab in Chrome and typechrome://flags for Chromium-based browsers:  browsername://flags 
  2. Search for SameSite by default cookies flag.  It will be set to Default (enabled). Disable this option and re-launch Chrome.clipboard_ea0aeb836f8df2e770a3ca0ab0875a3fd.png
  3. Log into the 8x8 Meet plugins.
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