please try to create a new fresh environment for MS Team and see how it goes. You can always go back to the previous Windows account profile whenever you want.
Please follow these steps:
- Create a new Windows 7 account:
https://www.webucator.com/how-to/how-create-sec...
- Install MS Team in a new windows account.
https://www.microsoft.com/en-us/microsoft-365/m...
If the problem still persists then, please try the following things below:
- Try to access assignment files from MS Team mobile app.
- Try to access assignment files from a different computer that has the operating system Windows 10.
Please be informed, as per the article below, the minimum system requirement is Windows 8.1. It's not recommended to use MS Team app on Windows 7, as per my experience using the MS Team in Windows 7 creates many issues and produces inconsistent results: https://docs.microsoft.com/en-us/microsoftteams...
It's highly recommended you use at least Windows 8.1 (preferably Windows 10),
DISCLAIMER:
There's a link above from the non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
regarding