Error Message:

  • Article

'number' is an invalid subnet mask. A subnet mask must be specified in the form xxx.xxx.xxx.xxx, where xxx represents a decimal number between 0 and 255.

Explanation:

The incorrect subnet mask might have been specified in the registry with Regedit.exe or another tool that is not part of the Cluster service. Cluster service tools validate any subnet mask that you enter.

User Action:

Locate the incorrect subnet mask, and correct it with a Cluster service tool.