Word cannot open the file because the file format does not match the file extension
The problem can occur when the Word file you are trying to open has a different file extension than the file you are attaching. It happens when you convert the file manually. There can be other reasons as well. Whatever the case is, you can fix it by using any of the methods described below. Let us cover the above methods in a bit more detail!
1] Rename and change the extension manually
The simplest method to resolve this issue is to change the extension for the file manually. To do so, right-click the file and select Rename option.
Then, change the extension of the document from *.docx to *.doc and then try opening the file. If this doesn’t fix your problem, move to the next method.
2] Change the file type to .asd
Go to the location where the file is stored, right-click it, and select the Copy option. Then, move to the following path – C:\Users%username%\AppData\Local\Microsoft\Office\UnsavedFiles by pasting this in the start menu.
Paste the document here, and change the file type to .asd.
Open word, click Open, and at the bottom of the page hit the Recover Unsaved Documents tab. When the document appears in the list, select it and save the document after opening it.
3] Uncheck Hide Extensions by known File Types
Open the File Explorer and go to the View tab. Just adjacent to it, you should find the See more icon visible as three horizontal dots. Click the icon and then, select Options.
When a new window appears, scroll down to locate Hide Extensions by known File Types entry. Make sure, the box next to it is left unchecked.
4] Unlocking the Word file
Many users reported that the issue ‘File format does not match the extension could also be resolved by unlocking the file. So, if you are not able to open the file sent as an attachment, use this workaround.
Open File Explorer.Go to the path to the folder containing the Word file you want to fix.Right-click on the file and choose the Properties option.In the window that appears, switch to the General tab.Find the Unblock button and click to select it. Note – This option is only visible for files from another source, such as an email attachment.Hit the Apply button and then, click Finish to close the window.
Word cannot open this file because it is larger than 512 MegabytesWord experienced an error trying to open the fileMicrosoft Office cannot open this file because some parts are missing or invalidMicrosoft Office cannot open this file because the .zip archive file is an unsupported versionMicrosoft Office cannot open this file because there are problems with the contents.
What is a WAV ASD file?
An ASD file is a temporary backup created by Microsoft Word, an Office application. It contains a snapshot copy of the currently opened Word document. Such file types are mainly used for automatic backup and recovery of documents in Word in case of a sudden crash or accidental closing.
Why is my Word file locked?
The file might be locked for a number of reasons. For instance, the file is shared and another user is currently editing it or some other Office app is running in the background with the file already opened. Another possible reason could be that the file has been marked as final and can no longer be updated.
