AVG Antivirus MacBook Pro macOS Sierra Time Machine stops Backup

Hello Jürgen,
We are sorry to know that you are unable to backup your computer with AVG enabled. To fix this issue, we suggest you to check if you have installed the latest version of AVG AntiVirus for Mac in your computer. Do a clean installation of AVG and see if that fix the issue/ If you still have any issue, please let us know and we will assist you further.
Thank you

Time Machine stuck in backing up the HDD of my MacBook always at a certain point. At the same time the Finder crashed and I had to restart the machine! I Had to remove AVG Antivirus to solve that issue!

Hello Jürgen,
We are sorry to know that you are unable to backup your computer with AVG enabled. To fix this issue, we suggest you to check if you have installed the latest version of AVG AntiVirus for Mac in your computer. Do a clean installation of AVG and see if that fix the issue/ If you still have any issue, please let us know and we will assist you further.
Thank you