1] Check if this happens for a particular app or for all your apps.
2] Restart File Explorer. Press Ctrl+Shift+Esc to open the Task Manager, locate the Windows Explorer process, right-click and select Restart, See if this helps.
3] Restart your Windows computer and see if this problem goes away. A restart usually solves many such random issues.
4] Run the App Troubleshooter and let it fix and problems if they are found.
5] If you are using a local account, sign-in with your Microsoft Account and see what happens. Change your user account and check
6] If you are using a proxy connection, then open Internet Options > Connections > LAN settings > Uncheck Use a proxy server for your LAN > Select Automatically detect settings.