Howdy!
I have been using Avast free for quite a while now and am quite happy with it. I noticed the other day that besides avast there was also Microsoft Security Essentials (MSE) installed on my machine. I think I installed that a while ago under the assumption that it was a scanner like malwarebytes that provides no live protection. I wanted to uninstall it via Windows 7’s control panel. The uninstall process got hung up somewhere (I can’t remember where) and my computer became unresponsive for over an hour. Being the impatient person I am I ended up unplugging it.
A few errors occurred after reboot. I was told that a file for MSE was missing (again I don’t know which one), but after a few more attempts I got the machine to boot just fine. No MSE messages of any kind. Everything seemed like it was in perfect order.
However, I then noticed that Avast was reporting that its real time shields were not running. Trying to get those to run produced “Shield unreachable” messages, which I have seen a quite a few entries for in this forum. The icon in the task bar still told me I was fully protected, though. Several installs and uninstalls later (via control panel and using the avast removal tool; in safe mode, normal mode, safe mode with networking) I found that when I install it (fresh after a reboot) everything seemed to be in order. I scheduled a boot-time scan after avast updated itself and rebooted. The scan took a long time and I left for lunch assuming I would be able to find the results in the log file. Unfortunately, when the system booted into the only user account on this machine (with admin privileges), I was unable to open the log from avast’s UI. Additionally, when trying to get into the folder where it was supposed to be located, I was told by Windows that I do not have privileges to do so. Also, the real-time shields were off again. Trying to turn them on produced the same error as before (shields unreachable).
In addition to that avast’s update did not seem to be working anymore. I tried to update it but it was stuck at initializing. Firewall is Windows 7 firewall, which does not block avast. I even turned it off, but still no luck.
Malwarebytes reports no infections (both in safe mode and normal, with full scan and quick scan). I uninstalled avast again and decided to reinstall MSE just so I could uninstall that again (hoping this might remove something that was not removed properly before). A reinstall of avast at that point resulted in the same problem. I now have MSE installed again, running a full scan. It seems to be happy.
I am not sure what is left to try. Microsoft does not seem to provide a removal tool for MSE. I am not sure if this issue is even related to MSE, but it seems that the avast problems started after the unsuccessful removal of MSE. There is nothing Norton on this machine. I even ran their removal tool as well, just to be safe.
As I said, my user account is an admin account.
Does anybody else have any ideas what I could try next?