If you find the following Error message 0x8007054b (Event ID 15) event log, then in most cases, there is an error in the DNS configuration of your client.

Before further researching the cause, you should check the DNS settings. If these are correct, the following helped me to eliminate the error.

The exact error message in the event log is as follows:

Type: error
Source: Automatic registration
Category: None
Event ID: 15
Date: date
Time: time
User: Not applicable
Computer: computer name
Description: Automatic certificate enrollment for Local System failed to connect to Active Directory (0x8007054b). The specified domain does not exist, or a connection could not be established. Registration is not carried out.

To fix the error please do the following:

  1. Click on Start, then on Run, and enter the command gpedit. msc and then press [EINGABETASTE].
  2. In the left pane, expand Computer Configuration, Windows Settings, Security Settings, and Public Key Policies.
  3. Double-click Auto-Registration Setting.
  4. Click Do not register certificates automatically.
  5. OK.
  6. Then repeat steps 2 through 5. But in step 2, User Configuration, Windows Settings, Security Settings, and Public Key Policies.
  7. Then please close the Group Policy window.
  8. Restart the PC

The error should be fixed and no longer appear in the event log.