Error 0xC0070643

John, Did you download & use the AVG remover tool (http://aa-download.avg.com/filedir/util/AVG_Remover.exe)?.
AVG Guru

For unknown reasons my installation of AVG Free on Windows10 stopped working properly. Quick tune-up stopped at 23% and since then no updates. Tried to 'fix' (repair) the installation with no success. Tried to uninstall, so that I could reinstall from scratch, but also unsuccessful - receiving error 0xC0070643 Event exec_finished.

I'm completely stuck at this point, unable to move forward or back. Any help welcomed.

John, Did you download & use the AVG remover tool (http://aa-download.avg.com/filedir/util/AVG_Remover.exe)?.
AVG Guru