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Can't authorize Excel/M365 for data sync

  • June 4, 2026
  • 2 replies
  • 76 views

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I’m trying to using the Excel / 2-way sync integration with Lucid/M365. This was working for me yesterday, but now I can’t see updates (in either direction), nor can I add or replace my data set. When I choose Excel365 and click ‘Authorize’, I get redirected to a page that just reflects a 401 error. When I return to the Lucidchart tab and click ‘Authorize’ again, I see a Windows sign-in pop-up but, when I enter my work email address, I get a response that my account could not be found. (I’m logged into M365 on the same browser.) I have rebooted, logged in/out, disconnected/reconnected and am now repeating the process in incognito browser windows with the same outcomes.

 

Best answer by aishakhan

Just providing an update here, this issue is now resolved! 

Comments

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  • Lucid support team
  • June 4, 2026

Hi ​@CarrieClaiborn,


Thank you for posting in the Community! We have additionally received the support ticket you created, I will continue to investigate this there. You should receive an email with further communication shortly.


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  • Lucid support team
  • Answer
  • June 8, 2026

Just providing an update here, this issue is now resolved!