DavidR
2
You don’t say what avast version that you have 11.1.2241 being the latest ?
The avast Self Defence (SD) module is designed to protect avast and that would include running system restore. Depending on what avast version you have has an impact on how SD might impact on it, the latest version of avast’s SD is more tolerant of system restore. You can however disable the SD module before using system restore.