This feature in Windows Security can prevent "vulnerable" drivers from loading even if they are signed.
If memory integrity is active, the driver will be flagged and blocked. Open the menu and search for Windows Security . Go to Device security and click on Core isolation details . Toggle the Memory integrity switch to Off . Restart your computer. Step 3: Install the Virtual USB MultiKey Driver
You can, but it is not recommended. Ignoring it leaves a potentially risky driver running on your system. Even if it is not malicious, its presence could cause conflicts or crashes in the future. multikey.sys windows 11
Because this driver is often unsigned or self-signed, installing and maintaining it on modern versions of Windows 11 requires bypassing strict security protocols like and Memory Integrity . Compatibility & Risks
After manual removal, run a deep offline scan using or a trusted third-party antimalware tool to ensure no secondary payloads remain on your system. Legitimate Alternatives to Dongle Emulation This feature in Windows Security can prevent "vulnerable"
Windows requires all kernel-mode drivers to be digitally signed by a trusted certificate authority. Because multikey.sys is often modified or community-created, it frequently lacks a valid, Microsoft-approved digital signature. Windows 11 blocks the driver from loading (Error Code 39 or 52), viewing it as an unstable or unauthorized component. 2. Core Isolation and Secure Boot
Look for the entry that mentions MultiKey or matches the driver class. Note its Published Name (e.g., oem25.inf ). Force remove the driver package by running: pnputil /delete-driver oemXX.inf /uninstall /force Use code with caution. (Replace oemXX.inf with your specific file number). Modern Alternatives to Legacy Emulation Go to Device security and click on Core isolation details
Type the following command to delete the service from the registry: sc delete multikey Step 4: Run a Malware Scan