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Sudipto, Computer Enthusiast
Category: Microsoft
Satisfied Customers: 5976
Experience:  Computer Hardware EngineerCertificate Course In Computer Maintenance,8+ years of Experience in computer troubleshooting
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Windows Defender is not working on my PC. I have tried to find

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Windows Defender is not working on my PC. I have tried to find solutions and even re-downloading and installing it but it does not seem to be possible. I would appreciate assistance in resolving this problem.
Thanks for posting your question, can you tell me the name of the OS that, you use ? Like Windows XP, Windows Vista etc.?
Customer: replied 4 years ago.

Windows 7 Home Premium

Customer: replied 4 years ago.


Do you use any other Anti Virus program ? like Mcafee or Norton etc.
Customer: replied 4 years ago.


OK, what exact happens, when you try to enable Defender andwhy are you trying to enable it, as you are aleady using a anti spyware program ?
Customer: replied 4 years ago.

The SAS program is only used periodically - not in competition with Windows programs. I am/was satisfied with WD taking care of security along with MS Essentials

OK, what exactly happens, when you try to enable to Defender ?
Customer: replied 4 years ago.

Absolutely nothing.

It appears to be damaged. Probably needs to be removed and re-installed.

Can you tell me, which steps you are taking to enable it ?
Customer: replied 4 years ago.

Please can you tell me how to fix the problem. I have answered your question. I can't update it - I've tried looking for MS to fix it for me with downloads.


I expect it will need to be removed and re-installed. I'm not an expert!

Please disable the "Superantispyware" and try to update the Defender and let me know .
Customer: replied 4 years ago.

I can tell you now that WD cannot be updated - it just does not work in any way at all. Can you advise me how to uninstall it and re-download it and re-install it. I would like to go to bed shortly.



Are you using MS Essential or MS Security Essential ?
Customer: replied 4 years ago.

Yes I'm using MSE

OK, I am giving you two links below, one for the uninstall process and another for the install process.

As, you know already that, WD is now bundled with MSE and uninstalling MSE will uninstall the WD, after that reinstall the latest version of MSE and let me know the result.

There is no hurry, you can try them later and reply me back, because I am also going offline in next 5 mins.

If these steps do not solve the problem then, we will try other solutions.

Uninstall Method

(Read the full document, before trying any steps)


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