Windows 11 Home Addition will not open video files

[Microsoft Windows]

My laptop has a Windows 11 Home Edition operating system.Recently it has simply stopped playing video files. Whenever I try to open an MP4 or WMV file, a window opens then quickly closes. No error message is generated. This is happening for all my files in these formats. This happens when I use Windows Media Player and Windows Movies & TV. My PowerPoint presentations are similary shutting down as soon as I try to play one of the embedded videos.I also tried opening videos in Windows Media Player Legacy, but get the error message "Server execution failed".Please help!-G

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