Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Cannot open Security Essentials or Windows Defender

11 Oct 2011   #11
gregrocker
Microsoft MVP

 

You can try the Repair Install first but I'd still back up everything externally.

Look over these steps to get a Perfect Reinstall.


My System SpecsSystem Spec
.
13 Oct 2011   #12
Corrine

Windows 7 & Windows Vista Ultimate
 
 

One other option you can try prior to the Repair Install is to Submit a support case online for Microsoft Security Essentials. Select "Installation fails" > your country > E-mail Support.
My System SpecsSystem Spec
Reply

 Cannot open Security Essentials or Windows Defender




Thread Tools




Similar help and support threads
Thread Forum
What's the difference between Defender and Security Essentials?
Hello, My copy of Windows 7 comes with Microsoft Security Essentials and Windows Defender. I was just wondering what the difference is between these 2 programs? Thank you
System Security
Difference between Wndows Security Essentials and Windows Defender
Recently, I installed Avasti and uninstalled Windows Security Essentials because didn't need two antivirus programs. Then, Windows Defender "kicked in" and every couple of days it is updated with a ~35MB file. Why is the file so large when compared to the WSE updates? Today, this file KB915597...
System Security
Microsoft Security Essentials and Windows Defender mutually exclusive
Running win7x64. If I have Microsoft Security Essentials "active" I am unable to turn on Windows Defender. If I turn off MSE then I can turn on Defender. If I then return to MSE and activate it, Defender is automatically turned off. Is this normal behavior? If I can only run one of these,...
System Security
MS security essentials an windows defender
does msse shut down windows defender on instal? had panda cloud antivirus, an in event viewer found a registry hive leak, that it would'nt detect the problem. i down loaded an installed msse, after removing panda. an msse found and removed 2 issues.(listed below) was wondering what would of shut...
System Security
Microsoft Security Essentials 1.0 and 2.0 Disable Windows Defender
More - Microsoft Security Essentials 1.0 and 2.0 Disable Windows Defender - Softpedia
News


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 18:59.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App