Reija, I feel your pain...
Here is how to actually fix the issue, if you haven't already...
Open up a Command Prompt (Start>CMD>Enter)
Type in:
If you 64bit Office with 64bit Operating System:
cd "\Program Files\Microsoft Office\Office 15"
Then
cscript ocpp.vbs /dstatus
Then
Look at the Last 5 characters of the installed product key:
Then
cscript ospp.vbs /unpkey:(the last 5 characters of the product key above)
Here's how to do it on a 32bit Office:
cd "\Program Files (x86)\Microsoft Office\Office 15"
Then
cscript ocpp.vbs /dstatus
Then
Look at the Last 5 characters of the installed product key:
Then
cscript ospp.vbs /unpkey:(the last 5 characters of the product key above)
Open up outlook, you should get a prompt to login to your Microsoft account. Login and select the key that you are actually wanting to use.
This seems to be the ticket, but ocpp.vbs does not seem to exist in /office15 32-bit. There is ospp.vbs, which I'm using for both.
I think this works. Thank you. Note: I am not OP