Symptoms
Pleskbackup.exe tool finishes backup task with warning "Backup failed" and the following error is displayed in the backup log file:"Cannot dump database content database_name of type mysql"
Resolution
The problem is known to be caused by active "On-Access Scanner" feature of McAfee VirusScan anti-virus software installed on Parallels Plesk Panel server. This functionality prevents Parallels Plesk Panel from backing up MySQL databases properly. To resolve this issue, exclude the folder where MySQL databases are stored from the list of folders scanned by McAfee VirusScan.Below is the folder location on default Parallels Plesk Panel installation:
"C:\Program Files\SWsoft\Plesk\Databases\MySQL\Data\"
It is also recommended to enable the "Also exclude subfolders" option in McAfee VirusScan.