We suggest the following fixes if you get This is not a valid file name error in Outlook when sending email: Remove invalid special characters from the file name ...

Some Excel users have reported experiencing the Data source reference is not valid error while creating a pivot table in Excel. We will learn why this error occurs ...

A file extension, or file name extension, is the letters immediately shown after the last period in a file name. For example, the file extension.txt has an extension of .txt. This extension allows the ...