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 ...

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 ...

MLStrand56 complained to the Windows forum about Windows’ inability to save file names containing punctuation. [Email your tech questions to [email protected] or post them on the PCW Answer Line forum ...

The default setting for Windows is to not display a file's extension, which is the last period in a file name followed by 2 or 3 letters. Therefore, when viewing files in Windows you would only see ...

When trying to save a Word document in OneDrive, we get an error message implying that the file name is not valid. This issue occurs only when saving files from ...

If you typically deal with a large volume of documents as part of your company's business, it helps to have an organizational system based on date. Microsoft Windows always adds date meta data that ...

Evan Coleman is an Updates Editor on the Credit Cards and Travel Rewards team at Forbes Advisor, showcasing his interest in personal finance and love of travel. He has written for a variety of local ...