Sorry for delay in update.
my mum has just got the SAME issue. she is now unable to use her laptop at all, already had to do a system reset, then she installed comodo firewall and it worked ok, however after installing antivirus (same I have) the whole thing did the exact same as me, all programs files everything stops working, no restore points so she has to loose everything again.
Please can you escalate the developer team to try recreate the issue to see if there is a fix? Here are the steps me and mum had: (I suggest do this in virtual pc or spare one to avoid the complete corruption of windows 10)
Steps followed for the issue:
Comodo firewall installed, ticked “create rules for safe applications” in both firewall and hips (untick the widget and welcome message boxes while set to proactive settings"
It worked after a restart.
however once mum installed the antivirus Qihoo 360 Total Security, and restarted, same big issues as the one I had.
(As for me I already have the antivirus installed and when I install comodo everything goes same issue, but it seems to do it other way around as well)
Please can you update the developer team about this information as its worked fine for years but suddenly interacts with Qihoo antivirus (which uses bitdefender and avira databases to ensure no viruses slip in). it is only since last comodo firewall update that this has started to occur (no updates on the antivirus except the daily database updates)
I now have to try get to hers as soon I can tomorrow, she is housebound and requires the laptop to function so she can order groceries when im unable to make it down.
I hope this information helps to solve this major computer breaking conflicts.
there is no firewall in the 360 security so no conflicts with having more than one firewall. I also had issue couple years ago when trying to use bitdefender trial with comodo firewall. It did the exact same thing, so I never trusted bitdefender itself as i assumed that messed it all up, but now Im wondering if its the same issue and its related to the bitdefender virus database?
Feel free to copy paste this info to the developers (Im not sure how to update them) or they can read this post for this information!
EDIT: I found the email with the password for the comodo support ticket, I copied the info above there so they can get a response there as well, so hopefully the developers can see this if it gets escalated again (it changed to open from escalated on reply)