I in SQL SERVER2017 created a maintenance plan, every day to a full backup of a particular database, oddly, however, it is backup was successful, but the corresponding error log logging in every day,

As shown in figure 1: maintenance plan


As shown in figure 2: login failed error log, and backup behind successful log


As shown in figure 3: backup successful database file


As shown in figure 4: account information

CodePudding user response:

The issue said Microsoft could not understand, spent two days, finally found out the reason!