Sorry for the delay but I had to wait for time to get the whole process completed at one session. The very good news is that I am now able to access Spybot S & D by using the desktop icon! So, thank you for all your help. The interesting thing is that sddt.exe has appeared in the new Defence+ Computer Security Policy!
There are a couple of points that arise from the move from 3.8 to 3.9 where you may be able to help further.
Firstly, I could not find any clear instructions for uninstalling Comodo. From reading the forum I notice that a number of people have complained that uninstalling Comodo has caused them problems. Also, I found that someone mentioned that Comodo should be disabled before it is uninstalled. Perhaps if someone wrote simple uninstall instructions that we could refer to, some of the problems (and perhaps need to clean up using the zip file link you kindly provided) could be avoided.
Secondly, as part of the install process for 3.9 I did the recommended scan. This listed ‘TrojWare.Win32.TrojanDropper.Agent.~ ZAZ(ID=0x2d0bc6) at C:\Windows\System32\muzapp.exe’. As I was uncertain about this I copied it to the desktop so it would be available if it proved to be a false positive. I found I could only save it as a text file; but I presumed this would allow me to return it whence it came if the false positive was proved.
After getting 3.9 up and running I did some research and found that Lavasoft had previously shown this file as a false positive for me. The file muzapp.exe is apparently used for my wife’s Samsung MP3 player. After I sent Lavasoft details they updated their records. Perhaps Comodo needs to update their records so this doesn’t occur as a false positive in the future? And if there is a simple way of restoring the muzapp.exe file using the text file on my desktop do please let me know. Most applications seem to have quarantine vaults so that suspect files can be restored; but I am not sure if Comodo does with the initial scan.
When I checked Comodo I found that Firewall was set to Safe and Defence+ was set to Clean PC. I thought that the settings were initially set to Training mode; but perhaps I am wrong or things have changed with version 3.9 (I confess I have not yet checked through the Help file…)
It might help others if I list the procedure I used to uninstall 3.8 and install 3.9 – after I had copied your instructions and those listed for the CIS clean up zip file to the desktop.
1 download CIS 3.9, using the link you gave, and save.
2 download CIS zip file, using the link you gave, to clean up if any problems are found with the uninstall.
3 remove internet access (I removed the Ethernet cable from the cable modem).
4 remove Comodo from startup (I did this using the tools in Spybot S & D).
6 although the Comodo icon no longer appeared near the clock in the bottom right hand corner of the screen, I did not get a warning from the Security Centre so I opened up the Security Centre and found that Comodo was still listed as the firewall! So, I started Comodo (from All Programs) and set both Firewall and Defence+ to disabled. Security Centre then gave me the warning!
7 I now made a restore point and then did a reboot.
8 I went to Control Panel > Programs and features and uninstalled Comodo. I saw the message that the uninstall was successful so I decided not to worry about using the zip file for clean up.
9 I did a reboot to complete the uninstall.
10 I next ran (right click and Run as Administrator) the CIS 3.9 file I downloaded earlier. I selected Firewall only as I already had AVG for antivirus. I chose ‘Yes’ to join the Threatcast but said ‘No’ to the Safesurf toolbar.
11 I next saw the offer of device software from Comodo Network Service but I opted not to install as I did not know what this was (but see 13 below).
12 I opted for the full scan – which is where the false positive mentioned earlier came to light.
13 I did a reboot and received a message that the Firewall was not functioning properly so I ran the offered diagnostics. The diagnostics told me that it had found the problem and I said ‘Yes’ to fix the problem. This led to the reappearance of the Comodo Network Services device software mentioned at 11 above so I said ‘Yes’ this time and Comodo fixed the problem!
14 I did a reboot but was concerned to find that the Comodo icon did not appear in the bottom right hand corner of the screen to let me know that the Firewall was working. However, after I had clicked the Comodo desktop icon the icon then appeared in the bottom right hand corner.
15 I reconnected the internet cable removed at 3 above and checked that I could access my e-mails ok. I then checked that IE8 was working ok.
16 I now tried Spybot S & D using the desktop icon and was pleased to find that it now ran correctly.
17 I did a reboot and found that the Comodo icon appeared in the bottom right hand corner.