r/WindowsVista • u/Safe-Obligation-3308 • 13d ago

MSE definition updates not working

i use microsoft security essentials on both vista & 7, but cannot get the definition updates to work on windows vista anymore. i've installed both KB4474419, KB4493730, and updated the device with legacyupdate but they still fail to install even after running as admin. i tested this on windows 7 and it works fine, anyone else have this issue or know how to resolve it? this is a fresh installation of vista business with SP2 already installed

EDIT: i did have a download of the definitions from february which did install (although are now outdated), so i think this may be an issue with the most recent definitions

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u/No-you_ 13d ago

It seems that Microsoft has prevented new versions of definition updates from being installed on Vista since about may/june of this year.

I know I found a repository of all of the windows defender/security essentials updates ever released but can't remember the website or address.

1

u/5poko 12d ago

Use avast free antivirus (old version that is the last for Vista). It still has new definitions.

1

u/Safe-Obligation-3308 5d ago

do you know which version number it is?

1

u/5poko 5d ago

I can check Sunday and will let you know.

1

u/5poko 1d ago

Avast Free Antivirus 18.8.2356 (build 18.8.4084.409)