Error Another account from your organization is already signed in on this device. Try again with a different account.

The solution I found was to use the 'Clear Application Data' option in the 'Help' menu. I found this in the Microsoft Word, Excel, or Outlook apps.

Then you can go through and choose any or all of the following options:

'Select the data you want to clear:'

• Experimental Features
• First Run Experience
• Identities
• Information Protection
• License

After you confirm, the app will restart. as soon as it restarted, it pulled the correct login information and account and I didn't even have to try to sign in again. Very weird. But checked all the apps and have had no issues. This was fixed today, 08/16/23

Solved for me:

I had the same problem in my iPhone.

You can try to Reset credentials for Office applications to check the result:

1. Close all the Office for iPhone apps.

Go to Settings on your device via tapping the gear icon.

1. Scroll down and find "Microsoft 365 (Office)" application.
2. Then find "RESET" section and click "Reset Microsoft 365 (Office)".
3. Turn the “Delete Sign-In Credentials” button on.
4. Open the app and Sign in again to see the result.

This is a MAJOR bug in Office since an update has occurred several months ago. I cannot count how many times I see this issue and the only way to correct it is to go into settings, disconnect ALL the accounts, then download the Support Assistant and run through that entire process, then when you're done, delete the OAuth folder from localappdata. This issue only started when Microsoft updated office to change the initial login screen of Word/Excel to remove the 'skip for now' option if the product was not activated (but still signed in with a user with no license). This is a MAJOR problem as it allow for word to have users remain signed into the applications but you cannot move the window out of the way to get into word in order to click their name in the upper right to sign them out so you can sign in a user that DOES have a license. THIS IS BUG THAT MUST BE FIXED. YOU CANNOT EXPECT USERS TO FIX THIS. Even a complete uninstall and reinstall of office entirely DOES NOT FIX THE ISSUE.

Sometime, due to multiple licenses assign to single user can be the reason of this issue. Try to change the license type by looking at microsoft tenanet with administrative privilige.

If this way the problem is not solved then, try another way.

Modify OneAuth Account Store (Windows Devices):

Navigate to the %localappdata%\Microsoft\OneAuth\accounts folder.

You’ll find one or more files with different GUIDs (if multiple accounts are involved).

Open these files using Notepad.

Examine the account_hints value and identify files associated with the account you want to use.

Change the association_status entry for com.microsoft.Office to “disassociated” and save the file.

verify the ID which is assign to azure account of the user and put the same ID on here.

reboot the computer and try to sign in again.

Thank you. I spent hours trying all the recommended solutions with no luck. Your Outlook sign-in/sign-out solution did the trick.

We all know that this issue is caused by "multiple accounts". The problem is that Microsoft has randomly changed how the software works and it now prevents you from bypassing the sign in screen to sign out the account that does not have a license to use the product!

Prior to the update that has caused all these issues, if shared access was enabled and a user with no license for local word/excel signed into the product they would continue to use the product endlessly as the other user. Then, when the user WITH the required license needed to be reauthenticated you would simply "skip" the login screen and be unable to edit or save anything in the application (once you hit skip). At this point, you could sign out all of the users that were signed into the applications in the upper right, then validate the user with the proper license and be on your merry way.

This BUG prevents you from bypassing the login and simply gives you a halting error preventing the user from doing ANYTHING. The only method to fix this is "call your IT department".