Create special registry keys to fix this issue

Symptoms

1. After you install Acronis Cyber Backup 12.5 on the machine, certain USB drives/keys are not instantly detected. It takes 2-5 minutes for the drive to acquire a letter and be accessible in Windows Explorer.
2. If you stop Acronis Managed Machine service, the same USB drives are detected instantly.

Cause

Hardware incompatibility: some specific devices incorrectly process standard commands issued by Acronis product components.

Solution

To resolve the issue, do the following:

1.  Open Windows Registry Editor: Start -> search -> type regedit.exe and press Enter.
2. Create the following registry keys and subkeys:
   • HKEY_LOCAL_MACHINE\SOFTWARE\Acronis\KLib

     Type: REG_DWORD

     Name: DisableATAIDForExternal

     Value: 1

   • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Acronis\KLib

     Type: REG_DWORD

     Name: DisableATAIDForExternal

     Value: 1

   • HKEY_LOCAL_MACHINE\SOFTWARE\Acronis\KLib

     Type: REG_DWORD

     Name: DisableReadCap16

     Value: 1

   • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Acronis\KLib

     Type: REG_DWORD

     Name: DisableReadCap16

     Value: 1

3. Restart the machine

More information

If the described solution does not help, collect Acronis System Information from the affected machine and contact Acronis Support