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Event ID: 10526 Source: ENTSSO

Source
Level
Description
Failed to generate a new master secret.
Client User: <user>
Client Computer: <machine> (Configuration.exe:2772)
Tracking ID: <GUID>

Error Code: <error code>, <error message>.
Comments
 
As per Microsoft: "This issue may occur if one of the following conditions is true:
- The computer name is not recognized and is not mapped to the IP address. This condition exists if the return code that is displayed in the Config log file is 2.
- The computer is a member of the workgroup. This issue may occur if the return code that is displayed in the Config log file is 4. By default, the following registry key is enabled. A DWORD value of 1 indicates the registry key is enabled.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\ForceGuest
Therefore, the Security Support Provider Interface (SSPI) tries to log on by using the guest user account and fails". See ME840705 for additional information.

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