If 1C throws an authentication error and won't let you into the database, the most common reason is simple — an incorrect or outdated password is being used. The solution is to check the password against the one actually stored in the system.
How to fix this:
Go into the cloud (the service where your login credentials for accessing the database are stored), open the section with saved passwords, and check the correct password for the 1C database there. After that, enter the correct password when logging in — authentication will succeed, and you'll get into the database.
So, if an error like this occurs — don't rush to contact the administrator or reinstall anything; first check the current password in the cloud storage, where it may have been saved automatically during previous logins.
Frequently Asked Questions
What if the password in the cloud doesn't work either?
In this case, you need to contact whoever administers the 1C database to reset or verify the user's password directly in the system.
Why could the password have changed in the first place?
Passwords are sometimes updated manually by the database administrator or automatically when security settings change — so the old saved version may stop working, and it's important to check against the current one.