After a Win 11 update I found a new driver called "a" with many new folders

Good day Emile De Mesmaeker

The “a” driver you’re seeing isn’t an error , it’s typically part of the update process where Windows drops in new components or reorganizes system files. Sometimes these folders look odd because they’re named generically, but they’re usually tied to hardware support, graphics, or multi-monitor setups. Since you’ve got three monitors, it’s very possible the update added or refreshed display-related drivers to keep everything running smoothly.

What you should do is check Device Manager to confirm that all your monitors are detected properly and that there are no warning icons on the drivers. If everything looks clean there, you don’t need to take any action, the system is just doing its housekeeping. If you want to be extra cautious, you can run sfc /scannow from an elevated command prompt to verify system integrity, but in most cases it’s not necessary.

Don’t delete or manually move those new folders. Windows Update manages them, and removing them could cause stability issues. If you notice any display glitches (like resolution resets or flickering), then I’d suggest reinstalling your GPU drivers from the vendor’s site (NVIDIA, AMD, or Intel depending on your setup). Otherwise, you’re good to go.

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