GrimeFighter is available in the free version, i think it's a "limited" version.
Just because a tool should not be available in the free version doesn't mean it might not be installed.
Secure Virtual Machines (aka NG, sandbox) is not available in the free version.
But a recent Avast program update installed it for me ...
Is it a buggy updater/installer ??? I think so.
I now check after any program update to make sure something didn't sneak in that i don't want.
Double check and make sure of what you really have installed, and it is what you want.
GokAy has a good suggestion, to uninstall Avast and use MSE at least temporarily to see if that fixes the problem.
@GokAy - I didn't know about the problem with GrimeFighter, thanks for that info !
When I change AV's i like to have everything downloaded before starting to make a change.
I like to keep my time without an AV to a minimum when making changes.
That way I don't have to go online to find and download files if something goes wrong.
Download the Avast uninstaller and know how to use it.
https://www.avast.com/en-gb/uninstall-utility
Download the MSE installer:
https://www.microsoft.com/en-us/download/details.aspx?id=5201
I would rather have files downloaded beforehand and never use them, than run into a problem and need them.
If i don't need them later, i can delete them.
I also always use the AV uninstaller to make sure everything possible is uninstalled and cleaned.
Some other things that might cause your issue:
Dual booting can delete restore points, do you dual-boot ?
Do you run any system cleaners, system optimizers, registry cleaners, etc. ?
Some of these programs might delete restore points.
For better "backup protection" consider using a program to create System Backup Images.
Then you have full control of what, when, where, how long, ... is backed up.
And, it is a complete backup of the "OS" drive, restore points are not a complete backup.
Macrium Reflect free is the most reliable/recommended program that i know of.
I use it, it works reliably for me.
Macrium Reflect Free
How important is backup/restore ?
If the HD crashes all restore points are lost, recovery is not possible.
If malware gets on the PC, restore points can be infected, they are always online.
With System Imaging (Macrium), full backups can be stored on an external/offline device.
If the "OS" HD crashes, recovery is possible.
If malware gets on the PC, it can't infect offline backup images ...
For me, Backup/Restore is #1 most important followed by security protection.
Hope you don't mind my long-winded reply ... it's my opinion from what i've learned ...