VividGrey
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Microsoft Security Essentials won't install
I have an XP computer that had a virus, but is now clean. The virus broke Microsoft security essentials so it was uninstalled. Other antivirus programs can be installed, but MSE shows an error 0x80070645 during install and aborts. I tried the MS Fixits for both version 1 and 2 of MSE without any help.
ASKER
Those upgradecodes entries were not in the registry.
I searched the registry for the following terms and all have come back without any items found:
1F69ACF0
Microsoft Antimalware
Microsoft Security
I have run sfc -scannow and there were no issues.
I searched the registry for the following terms and all have come back without any items found:
1F69ACF0
Microsoft Antimalware
Microsoft Security
I have run sfc -scannow and there were no issues.
#1. Open command can you list directory "c:\program files\Microsoft Security Client" and send the output list.
#2. Uninstall left some residue of files / folder which is conflicting with new install. Try removed based on this article:
http://answers.microsoft.com/en-us/protect/forum/mse-protect_start/uninstalling-mse/a63b8c4b-58ed-437e-8086-fa08d80725a4
#2. Uninstall left some residue of files / folder which is conflicting with new install. Try removed based on this article:
http://answers.microsoft.com/en-us/protect/forum/mse-protect_start/uninstalling-mse/a63b8c4b-58ed-437e-8086-fa08d80725a4
ASKER
There is no Microsoft Security Client folder in program files. I see that one gets created when I attempt to install the program, but the only file that populates in the directory is a EULA rich text document, and then the folder is deleted as the installer reports the failure and cleans up the installation.
I tried the items in the second link, some of which I had tried before. I had high hopes for the batch file cleaning up items, but it still does not work.
I tried the items in the second link, some of which I had tried before. I had high hopes for the batch file cleaning up items, but it still does not work.
SOLUTION
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ASKER
This is what worked when all other attempts did not.
IMPORTANT:
Back up the registry before making any changes to registry.
HKEY_CLASSES_ROOT > Installer > UpgradeCodes > 1F69ACF0D1CF2B7418F292F0E0
[Right click and delete the key]
HKEY_LOCAL_MACHINE > SOFTWARE > Microsoft > Windows > CurrentVersion > Installer > UpgradeCodes > 1F69ACF0D1CF2B7418F292F0E0
[Right click and delete the key].
- Restart computer.
- Upon restart try installation again.
Also take a look at this article from Microsoft, you mentioned that FixIT did not resolve the issue, try manual steps as per the article:
http://support.microsoft.com/kb/2635095