
Open word, click Open, and at the bottom of the page hit the Recover Unsaved Documents tab. Paste the document here, and change the file type to. Then, move to the following path – C:\Users%username%\AppData\Local\Microsoft\Office\UnsavedFiles by pasting this in the start menu. Go to the location where the file is stored, right-click it, and select the Copy option. If this doesn’t fix your problem, move to the next method. Then, change the extension of the document from *.docx to *.doc and then try opening the file. To do so, right-click the file and select Rename option. The simplest method to resolve this issue is to change the extension for the file manually. Let us cover the above methods in a bit more detail! 1] Rename and change the extension manually

It happens when you convert the file manually. The problem can occur when the Word file you are trying to open has a different file extension than the file you are attaching.

Word cannot open the file because the file format does not match the file extension This can be troubling, especially when you want to go through the contents of the file for one last time before sending it to someone else. Sometimes, when you try to open a Word file it fails to open and displays the following message – Word cannot open the file because the file format does not match the file extension.
