Failed to login to the agent .
ARCserve Version : R15.0 , R16.0 , R16.5
Failed to login to the agent when the CA ARCserve Backup System Account Password is set to 24 or more characters.
Solution:CA ARCserve Backup does not support Windows passwords that are 24 characters and longer. When you add a Windows agent machine to CA ARCserve Backup, you are prompted for a hostname and password. Even though Windows supports a long password here, CA ARCserve Backup does not, and login will fail.
Reduce the length of the password to less than 24 characters.
More Information :-
- Referense link from release notes