Windows XP SP2, all updated. Also running BOClean.
I run with 2 limited users as well as Administrator (“run as”). Before the upgrade, Comodo was causing timing problems with my taskbar on login where the icons would fail to show every so often.
After upgrading to the latest version by allowing the automatic update to run, it erased all of my rules due to its “conversion”. Thanks a lot.
Then, after I got it the way I wanted it (“paranoid mode”/“highest alert level”) and all quieted down, after I made sure that all the applications I needed would run correctly, I logged out.
When I tried to log back in, all I got was the desktop background, nothing else, no icons no taskbar. Ctrl-Alt-Delete gave me the Task Manager that showed that nothing else was running under the user, including explorer.exe.
When I tried to run explorer.exe (or any other executable, for that matter), I got a message box to the effect of: “Windows can’t find the device, file or directory. Permission problems. Access denied.”
No process would execute. Lovely. Nice brick of a computer. Great job, guys.
Since I couldn’t get explorer or the task bar or any other process to execute, I couldn’t disable Comodo
What I ended up having to do was boot up on a Knoppix CD, remount the system disk to read-write, and rename away the Comodo directory, the cmd*/inspect sys drivers, and guard32.dll so they wouldn’t execute on startup. Then I got my system back.
Once I had a system, I renamed back to correct names, and uninstalled down to the bone using instructions posted here to completely clean off Comodo, including BOClean.
I am currently running Windows firewall and have my icons back solid.
I seriously hesitate to ever try Comodo again.