Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi HJTan1,
As per your description, I totally understand that this problem has caused many inconveniences to you. I sincerely hope I can help you find the root cause as soon as possible.
Could you please confirm to me, are you able to sign-in your Microsoft 365 account via go to https://portal.office.com?
As per your error message, given this situation, please kindly try to update the registry key to check the outcome. The detailed steps were provided in the above article.
Note: Before updating the registry, kindly take backup of the registry:
Meanwhile, you can also try to run Office as administrator (Right click Word or Excel, select Run as administrator) to see if it can help. If the problem persists, please download and run SaRA tool to help you identify and fix this problem.
Moreover, here are some additional steps that might be help with your situation:
- Switch to another network to rule out network problems.
- Does your computer have any Proxy or VPN enabled? If so, please disable it to see the outcome.
If above steps doesn’t work for you then try to Completely uninstall Office with the uninstall support tool (option 2) to completely remove Office from your device, as uninstalling Office through Control Panel > Programs & Features would keep some preferences for next installation and then log into Office portal with the corresponding account and click Install Office button to install.
I appreciate your understanding and stay safe!!
Best Regards
Waqas Muhammad