The Office 10 key is valid. Windows 8 wants an Office 13 key. I want to use Office 10.

[janlee711]

Windows 8 won't let me activate Office 10.

 

[faalin]

uninstall office 2013 and reinstall office 2010 then put your 2010 key in. make sure you download the correct version of office 2010 for your key.

 

[MeneerWitte]

uninstall office 2013 and reinstall office 2010 then put your 2010 key in. make sure you download the correct version of office 2010 for your key.

Additional information in case:

Just to be surten,

After deinstall, restart the system before installing the nother version you want, install and restart. Sometimes it helps, don't ask me why.

Good luck and have fun doing it!