Some users have noticed that when trying to update an existing MS Office installation or install a new copy of MS Office, the error Office failed to install 30088-1021 (0) appears. The full error message looks like this
Failed to install
We’re sorry, but we’re having a problem installing your Office programs.
Make sure that the Office installation disk is inserted and that there is enough free space on your primary hard drive.
Please try the installation again after checking the above points.