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Since the IMG and MP3 files open normally, the Desktop itself does not appear to be the issue. The behavior seems specific to the Word, Excel, and PowerPoint files.
First, please check whether the desktop Office applications are installed locally.
-Press Windows + R, type winword, and press Enter.
- If Word opens, then Word is installed and we can investigate further.
- If Windows says it cannot find
winword, Word is likely not installed on the computer.
You can also test excel and powerpnt in the same way.
-Then check the file association:
- Right-click one of the Word/Excel/PowerPoint files.
- Select Open with.
- Check whether Microsoft Word, Microsoft Excel, or Microsoft PowerPoint is listed.
If those desktop applications are not installed, this would explain why the files do not open when you double-click them.
Also, being able to sign in to Office.com with your work account does not necessarily mean that the desktop Office applications are installed. Office.com provides the web versions of Word, Excel, and PowerPoint, which can be used through a browser.
As a quick test, try opening one of the affected documents directly through Office.com. If it opens there, the document itself is likely fine, and the issue is with the local Office application or Windows' file association.
Please provide the results for each of these checks. This will help determine exactly where the issue is occurring.