very frustrated with my $1,000 new touch screen computer due to windows 8. i download win8.1 from play store looking for a easier os so could enjoy my new computer. but i have a problem windows defender will not turn on!!!! i tried all community posted things and replies from microsoft. when i press start it gives this error message:[ERROR 577 windows can not digital verify signture for this file ]etc.... come on guys i never had problems win 98xp i loved useing my computer everyday. it was simple to understand and find the fix for the regular guy. now i HATE Using my NEW COMPUTER DUE TO WIN8 and WINDOWS 8.1 i thought would make things better. i wish i could put win98 or win7 on this computer so i can enjoy my purchase. anyone know how to get Win8.1 win defender to work??? or want to buy a $1,000 hp i7 with 2 tb 8 gb paper weight? <Moved from Windows>

http://answers.microsoft.com/en-us/protect/forum/protect_defender-protect_start/windows-defender-not-working-after-upgrade-to/51ff2e69-b7e7-46da-84c9-392bf040ef1e In the above thread we have seen that OP had same problem as yours and he tried some editing of registry that we normally do not recommend but it worked for him. You may want to give it a try. All you have to do is to: Press Win key + R. This will open Run. Type "regedit" and hit enter. Navigate to these keys: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender 4. Change value of 'DisableAntiSpyware' and 'DisableAntiVirus' from '0' to '1'. 5. After changing the values go to 'C:\Program Files\Windows Defender' and open 'MSASCui.exe' file. Hope this will fix the problem.

the ONLY answer you ever get at a Microsoft forum is: "This message is posted in the wrong forum" blah, blah, blah, MS forums SUCK! There are now 116 pages in this thread, which was begun more than two years ago, long before Windows 10 existed. The best way to get help is to start your own thread in the appropriate forum. As far as answers go, here's my current forum statistics: You can see that people have marked my replies as answering their questions more than 700 times, and there are others here with far more than me. The only time you'll get a request to post in a different forum is when you've posted in the wrong one. Good advice, Jim. We all know how easily a specific thread can be de-railed by one off-topic post. But, isn't that what moderators are for? to straighten out the threads and put them in their proper areas. No moderators? (don't expect things to stay organized). Also, it sounds like MS never quite got the 'play nice with other security apps' components of everything working properly (not 100% their fault) since this problem seems to persist from OS version to OS version. In the supposed 'off-topic' posters defense, I put it to you that it probably all stems from the same, root problem. MS Defender just won't work with a lot of the other security programs out there people want to use. I suggest more compatability, back off on the Security... just a little. Have the updater check for a list of authorized prgs to be allowed to work simultaneously with. Prgs are present, remain active anyways. MS can work some kind of deal with the 'enemy' for the betterment of us all, I'm sure. And figure out some way to earn a profit doing it as well. (no charge, MS) And I really don't care if this gets marked as Helpful or Not, if people want to they can, or not. I certainly understand why you quoted 'em, Jim. Those are some impressive stats. Where dem mods at? (HINT: canvass for volunteers) (I could'a sworn we had some mods at one time...)

the ONLY answer you ever get at a Microsoft forum is: "This message is posted in the wrong forum" blah, blah, blah, MS forums SUCK! There are now 116 pages in this thread, which was begun more than two years ago, long before Windows 10 existed. The best way to get help is to start your own thread in the appropriate forum. As far as answers go, here's my current forum statistics: You can see that people have marked my replies as answering their questions more than 700 times, and there are others here with far more than me. The only time you'll get a request to post in a different forum is when you've posted in the wrong one.

error 577 when i attempt to turn on windows defender win8.1

Anonymous

very frustrated with my $1,000 new touch screen computer due to windows 8. i download win8.1 from play store looking for a easier os so could enjoy my new computer. but i have a problem windows defender will not turn on!!!! i tried all community posted things and replies from microsoft. when i press start it gives this error message:[ERROR 577 windows can not digital verify signture for this file ]etc.... come on guys i never had problems win 98xp i loved useing my computer everyday. it was simple to understand and find the fix for the regular guy. now i HATE Using my NEW COMPUTER DUE TO WIN8 and WINDOWS 8.1 i thought would make things better. i wish i could put win98 or win7 on this computer so i can enjoy my purchase. anyone know how to get Win8.1 win defender to work??? or want to buy a $1,000 hp i7 with 2 tb 8 gb paper weight?

<Moved from Windows>

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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Answer accepted by question author

Anonymous

http://answers.microsoft.com/en-us/protect/forum/protect_defender-protect_start/windows-defender-not-working-after-upgrade-to/51ff2e69-b7e7-46da-84c9-392bf040ef1e

In the above thread we have seen that OP had same problem as yours and he tried some editing of registry that we normally do not recommend but it worked for him. You may want to give it a try. All you have to do is to:

Press Win key + R. This will open Run.
Type "regedit" and hit enter.
Navigate to these keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender 4. Change value of 'DisableAntiSpyware' and 'DisableAntiVirus' from '0' to '1'. 5. After changing the values go to 'C:\Program Files\Windows Defender' and open 'MSASCui.exe' file.

Hope this will fix the problem.

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Answer accepted by question author

Anonymous

This error seems to be of Windows rather than of Windows Defender. Please post a question in Windows 8.1 forum, they can help better.

0 comments

Answer accepted by question author

Anonymous

I have seen some more cases like this and I think the problem is specific with Windows Defender only. I want you to try this:

Turn off Windows Defender by going to Settings --> Administrator and unchecking "Turn on this app" and clicking "Save Changes". After turning off Windows Defender, open Registry Editor (in Start menu search for regedit.exe and open it). After opening Registry Editor, navigate to this registry key:

KEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services and change values of 'Start' and 'Type' entries according to the following:

WdBoot -->

Start: 0

Type: 1

WdFilter -->

Start: 0

Type: 2

WdNisDrv -->

Start: 2

Type: 1

WdNisSvc -->

Start: 2

Type: 16

WinDefend -->

Start: 2

Type: 16

Example:

Note: Incorrect editing of registry can cause serious damage to system. And you are doing edits in very sensitive area of registry. So be very careful. If you didn't understand anything then stop and ask it. I will explain in simpler words.

0 comments

159 additional answers

Anonymous

2015-12-23T19:56:02+00:00

the ONLY answer you ever get at a Microsoft forum is: "This message is posted in the wrong forum" blah, blah, blah, MS forums SUCK!

There are now 116 pages in this thread, which was begun more than two years ago, long before Windows 10 existed. The best way to get help is to start your own thread in the appropriate forum. As far as answers go, here's my current forum statistics:

You can see that people have marked my replies as answering their questions more than 700 times, and there are others here with far more than me. The only time you'll get a request to post in a different forum is when you've posted in the wrong one.

Good advice, Jim.

We all know how easily a specific thread can be de-railed by one off-topic post. But, isn't that what moderators are for? to straighten out the threads and put them in their proper areas. No moderators? (don't expect things to stay organized).

Also, it sounds like MS never quite got the 'play nice with other security apps' components of everything working properly (not 100% their fault) since this problem seems to persist from OS version to OS version.

In the supposed 'off-topic' posters defense, I put it to you that it probably all stems from the same, root problem. MS Defender just won't work with a lot of the other security programs out there people want to use.

I suggest more compatability, back off on the Security... just a little. Have the updater check for a list of authorized prgs to be allowed to work simultaneously with. Prgs are present, remain active anyways. MS can work some kind of deal with the 'enemy' for the betterment of us all, I'm sure. And figure out some way to earn a profit doing it as well. (no charge, MS)

And I really don't care if this gets marked as Helpful or Not, if people want to they can,

or not.

I certainly understand why you quoted 'em, Jim. Those are some impressive stats. Where dem mods at? (HINT: canvass for volunteers)

(I could'a sworn we had some mods at one time...)
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Anonymous

2015-12-23T15:10:30+00:00

the ONLY answer you ever get at a Microsoft forum is: "This message is posted in the wrong forum" blah, blah, blah, MS forums SUCK!

There are now 116 pages in this thread, which was begun more than two years ago, long before Windows 10 existed. The best way to get help is to start your own thread in the appropriate forum. As far as answers go, here's my current forum statistics:

You can see that people have marked my replies as answering their questions more than 700 times, and there are others here with far more than me. The only time you'll get a request to post in a different forum is when you've posted in the wrong one.
Was this answer helpful?

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