' cd downloads' and press entrer (without quotes) then:

Run the mseinstall.exe file with the / disableoslimit flag at the end, as shown below. To resolve this, run the command prompt as administrator and enter the folder where the mseinstall.exe file is located.

Windows program compatibility mode is not supported by this program. If you were to run the mseinstall.exe file at this point, you would get a different error as shown below: Inside the compatibility tab, check 'Run this program in compatibility mode for:' in Compatibility mode and select Windows 7 from the drop down box,

To avoid this error message, right-click the mseinstall.exe file and select Properties.įrom the properties window, select the compatibility tab. Your version of Windows operating system is not compatible with this program. Microsoft Security Essentials cannot be installed on your operating system. Save the mseinstall.exe file somewhere on the server, don't just run it, as by default the installation will fail with the following error: Select the language of your choice and 64-bit version. You will first want to download Microsoft Security Essentials on your Windows server.

Mseinstall 64 bit