If you operate Avira Antivirus Server in conjunction with Avira Exchange Security, databases, backup software or other data-intensive software, please set exceptions.
You can do this in PC Security → Real-time Scanner → Exceptions.
The required exceptions for Avira Exchange Security can be found here.
You can also add directories of the software described above to the "Files and folders to be ignored by the system scanner and real-time scanner" exceptions.
In addition, the processes of such software should be added under "Processes to be omitted by the real-time scanner".