To manually update the signatures for MSE:"%ProgramFiles%\Microsoft Security Essentials\MpCmdRun.exe" -SignatureUpdate Read More

Hi, The commandline option for uninstall seems to have changed. With version 4.4.304 I needed to use the following parameters for a proper uninstall:   "%ProgramFiles%\Microsoft Security Es… Read More

It's possible to deploy this with Active Directory Software Distribution (obviously other methods as well in the combination MSI + MST). Download the mseinstall.exe from Microsoft and open it … Read More

The Installation-Directory (Standard) for MSE changed, so you'll not be able to use: "%ProgramFiles%\Microsoft Security Essentials\setup.exe" /x /s any longer for a silent uninstall. Instead,… Read More

After extracting the download file, run: setup.exe /s /runwgacheck /o There is no popup window when you include the /o switch. You get a silent install with no restart. The installer starts t… Read More

In addition to antivirus, MSSE includes all the antispyware functionality which was in Windows Defender. On Vista, the MSSE installer will automatically disable Defender. However, on Windows XP… Read More

For a silent install: setup.exe /s /runwgacheck The software still pops up a window and begins latest definitions download & a Quick Scan though. Read More