When you run the Validate Active Directory Configuration validation test for failover clusters in Windows Server 2008 R2 or in Windows Server 2008, the test fails. Additionally, you receive the following error message:
- Start Server Manager. To start Server Manager, click Start, point to Administrative Tools, and then select Server Manager.
- Select Change system properties.
- On the Computer Name tab, click Change.
When you name a computer by using more than 15 characters, you receive a message that warns you that the name will be truncated:
A sample warning is shown here.
When the cluster validation test is executed, the Validate Active Directory Configuration test fails, as you can see in the following example.