Error code 29 when starting O365

I struggled as well with this issue, but I got it resolved now.

I think what eventually made it work again was running the scripts under "Method: Use scripts to automate the cleanup process": https://learn.microsoft.com/en-us/office/troubleshoot/activation/reset-office-365-proplus-activation-state#method2

Running the Microsoft Support and Recovery Assistant did not work.

Same problem, for weeks, nothing will fix it but thanks to TubaKoerper886, it is fixed. Was not easy finding this fix. Annoying that MS products now are pretty much "here is your product that you bought, if you have problems, figure it out yourself. We just create the messes, you fix, you spend your time on our issues that came with something you paid for".

No wonder folks love Apple. I just cant reeducate myself to Apple after all the years of education on using Windows and all the koolaid I've drank.

Thanks TubaKoerper886

Hi,

This fix worked perfectly. In 2 mins the office apps opened with no issues at all, i.e Error 29 has gone.

Thanks for the tip.

Regards,

I spoke to one MS tech for several hours reinstalling 365 multiple times with no solution. She transfered me to another department and my problem was fixed in 10 minutes. I think his department maintained user licenses.

Hi Rob.

Thanks for your quick answer. I try this solution yesterday without result.

I start to believe that this problem with error 29 to activate Microsoft 365 has a various causes. What do you think?

So, I still ask Microsoft to give us a definitively solution.

Tank you very much.