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- Wifi adapter has stopped working, wdiwifi.sys errors.

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01-18-2024 09:34 AM
HP Envy 17t with Microsoft Windows 10 (64-Bit) with an Intel Wireless-AC 9560 160MHz network adapter.
My wireless network adapter stopped working on Tuesday. No Internet at all.
When checking the adapter properties I get the following status message:
"Windows cannot initialize the device driver for this hardware. (Code 37). The request is not supported."
Windows update log didn't show any updates this week, and I haven't installed any new software recently.
Troubleshooting steps I have taken:
I have tried updating the driver
I have tried disabling and enabling device.
I have tried uninstalling and reinstalling drivers
I have tried deleting device and scan for hardware changes.
I tried rolling back, but that option wasn't available.
I tried System restore (I only had one restore point and it was less than 24 hours old)
None of these worked.
I also ran FSC as admin in safe mode. It detected errors but couldn't fix them. The CBS log has multiple occurrences of "hashes for file member WdiWiFi.sys do not match."
I also tried installing a USB wifi adapter and got the exact same Code 37 error message.
I'm assuming WdiWifi.sys must be causing this but not sure.
Any suggestions on what to do next?