Weblogic - BEA-141149 - An invalid attempt was made to connect to the Administration Server with a salt

ou may find this error in the server.log when attemtping to start a managed server

Apr 25, 2012 4:43:19 PM CEST 
Management 
Error 
BEA-141149 
An invalid attempt was made to connect to the Administration Server with a salt of 
uG18SfFAowfB3i8Wz1Z19A== and a signature of FwcdqJCZ7+8dmhiPGsUv8Q==, likely due to private key mismatch.

Apr 25, 2012 4:43:25 PM CEST
Security
Error
BEA-090513
ServerIdentity failed validation, downgrading to anonymous.

2 - Solution

To resolve this error, you must:

• recreate the boot.properties file in the security directory of the Admin Server and Managed Server
• and restart the system