installed but cannot run

[Guest]

I downloaded Defender without incident but when I try to run it I get a
Windows Pop Up that says [the system administrator has set policies to
prevent this installation]. I was had Microsoft Antispyware and it ran fine.
Any advice? what

 

[Bill Sanderson MVP]

We should probably eliminate the obvious first: Is this machine on a
corporate or other institutional network where an administrator might have
made such a choice?

I think the other bit of information we probably need is what version of
Windows this is--2000, XP or 2003, and if XP, whether Home or Professional?

 

[Guest]

Have you tried going to Windows Update and checking for available updates?
Whatever you do, (installing and updateting or unistalling) always as a
administratºr.
This is the key!
The installation as an admin is not enough.
You needed to login as an adm!n.

Can you gº to Windows Update, select Express (Get high-priority updates),
and apply all offered updªtes
http://update.microsoft.com

Once that is finished, can you verify the update installs? There are many
pre-requisite files which are needed from windows update and signature update
with windows defender will fail until you hªve these f!les.

For the benefit of the community reading this post, please rate the pºst.

I hope this post is helpful.

Let us know how it works ºut.

Еиçеl