Login sa

Hello

SQL 2017 Std

In this image are serveral erros concerning the sa account, but the backups ends ok.

The login is configured sql login. I have no problem with it.
The account of the service sql agent is an domain account wich is sysadmin

Can I have some help?
Thanks in advance

Someone/Something is trying to login with the SA account and has the wrong password. It doesn't look like it's the backup job since that was successful even later in the log.

Hello

It is related with the backups.Why i do not know. I changed the execution time and the lines appeared again.

What must I do ?

Thanks

If you're convinced that it has to do with the backups, then you need to review the job and the code or whatever for what's trying to use the SA login. In other words, you need to do some research.