I am getting an error code 29 "Unable to update license" When attempting to sign into microsoft 365

You now have loads of customers with the same problem, but no action from you for 6 months.

There is plenty of screenshots and documentation in this thread. Please take action and reply back with what we can expect from this.

I am having a similar problem. When I launch an Office 365 application such as Word, OneNote, etc then I get a dialog box asking me to sign in to my Microsoft 365 account. When I then provide the sign in credentials it tells me: "Couldn't update license. You can continue using Microsoft 365 and try again. If issues persist, please contact Microsoft support. Error Code: 29" After closing that dialog box I can continue to use the Office app, and it does show me as signed into my account.

I've tried logging out and then back in without any change. My current subscription for Office 365 Family does not expire for another ten months.

I've included screenshots below.

How can I (we) resolve this issue?

Thank you.

I was experiencing the same issue; however, the problem is now resolved for me. Since I have limited tech understanding, I cannot answer your specific questions. Below are the steps I performed.

1. Downloaded - https://download.microsoft.com/download/e/1/b/e1bbdc16-fad4-4aa2-a309-2ba3cae8d424/OLicenseCleanup.zip & https://download.microsoft.com/download/f/8/7/f8745d3b-49ad-4eac-b49a-2fa60b929e7d/signoutofwamaccounts.zip 
2. Extracted both files to the same directory and double-clicked - OLicenseCleanup file.
3. Opened the command prompt as administrator and executed

• cd "C:\Program Files\Microsoft Office\Office16"
• cscript ospp.vbs /dstatus

4. Now execute - cscript ospp.vbs /unpkey:<last 5 characters of product key> (for example: cscript ospp.vbs /unpkey:2WC00). Do this for all the product keys you find as the outcome of step #3.
5. Delete the below registries if present

• HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Licensing
• HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity

That's it !!! Now go to your Office app and log in one last time :)

No more errors :)

Reference: https://learn.microsoft.com/en-us/office/troubleshoot/activation/reset-office-365-proplus-activation-state

This worked for me and a few other users:

https://learn.microsoft.com/en-us/office/troubleshoot/activation/reset-office-365-proplus-activation-state

This finally worked for me!

Thank you Andreas!