Unable to repair broken IP in Plesk: Invalid mask parameter

Symptoms

• Unable to repair broken IP in Tools & Settings > IP Addresses > Repair:

  Error: ifmng failed: Execute netsh interface ipv4 add address Ethernet 203.0.113.2 32 failed[1]: Invalid mask parameter (32).

• IP 203.0.113.2 doesn't exist on Windows server:

  C:> ipconfig |findstr 203.0.113.2

Cause

Plesk bug PPPM-11763 that will be fixed in future Plesk updates.

Resolution

As a workaround add IP manually to the server:

1. Login to the server via RDP.
2. Add IP to the server manually:

   C:> netsh interface ipv4 add address Ethernet 203.0.113.2 255.255.255.255

3. Login to Plesk.
4. Go to Tools & Settings > IP Addresses > Reread