My office was working properly before.  I don't remember if that happened after and update.  But when I open excel and try to save the file it shows me "Document not Saved".  I deleted office an reinstalled and continues with the same problem.

After that I opened word and gave me an error"

This is not valid name

Try one of the following:

* Check the Path to make sure it was typed correctly.

* Select a file from the list of files and folders.