Windows Security error "The driver has been blocked PcaSp60.sys (or AMAYASp50x64.sys) does not pass the Windows driver policy."

This error may appear after a recent Windows 11 update, resulting in the Network Adapters not appearing in Operating Software from Melco.  This could cause the Melco machines not to be detected by the Operating Software.

Here is a possible one-time work-around:  Disable Driver Signature Enforcement in Windows.

1. Open Settings.
2. Go to System > Recovery.
3. Under Advanced startup, select Restart now.
4. On the blue menu, choose Troubleshoot.
5. Go to Advanced options > Startup Settings.
6. Click Restart.
7. When the list appears, press 7 or F7 for Disable driver signature enforcement.

Note that Driver Signature Enforcement turns back on automatically the next time the computer is restarted.

Article Rev 051926.  This article will be updated as new information becomes available.