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Hello and welcome to JustAnswer. My name is***** will be assisting you today. I am sorry to hear that you are having such trouble.
Do you use Windows 10?
In search, type command prompt.
In the search results, right-click Command Prompt, and select Run as administrator.
Copy the following commands and paste them into the command prompt by right-clicking and selecting paste (you can't use CTRL + V in the Command Prompt window to paste). Copy one command at a time, and press Enter after pasting each one in the Command Prompt.
net localgroup Administrators localservice /add
fsutil resource setautoreset true C:\
netsh int ip reset resetlog.txt
After you've entered all of the commands, reboot your device and try activating Office again.
HI did this work for you?