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Microsoft Security Essentials wont Open


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#1
FEARTheDope

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When I try to open it for my daily virus scan, it pops up a new window and says "The application was unable to start correctly (0xc00000ba). Click OK to close the application." Im not too sure of what could be causing this.

NOTE, i have deleted all the other virus applications so those dont interfere.

If someone may please help ASAP, that would be great. Thanks.
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#2
RKinner

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Please download Farbar Recovery Scan Tool and save it to your Desktop.

Note: You need to run the version compatible with your system. If you are not sure which version applies to your system download both of them and try to run them. Only one of them will run on your system, that will be the right version.

  • Right click to run as administrator (XP users click run after receipt of Windows Security Warning - Open File). When the tool opens click Yes to disclaimer.
  • Press Scan button.
  • It will produce a log called FRST.txt in the same directory the tool is run from.
  • Please copy and paste log back here.
  • The first time the tool is run it generates another log (Addition.txt - also located in the same directory as FRST.exe/FRST64.exe). Please also paste that along with the FRST.txt into your reply.

Ron
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#3
FEARTheDope

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When I try to download them, it says next to it in the downloads "Failed - Virus scan failed".
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#4
RKinner

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Following is a workaround for Vista/Win 7. This defeats the security feature that calls for the scan.

Copy the lines between the stars (but not the stars):

****************
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Attachments]
"ScanWithAntiVirus"=dword:00000001


****************

Open notepad and paste the above into it. Verify that you have it all then File, Save As, (to your desktop) "NoScan.reg" OK (Make sure you includes the quotes around the file name)

Close notepad. Right click on NoScan.reg and select Merge. Allow it to merge. (If you don't see the Merge option you probably left off the quotes and notepad tacked on .txt)


Firefox has another possibility for a workaround:
If you have Firefox you can bypass the whole problem. Type in:
about:config
and hit Enter
then scroll down until you find

browser.download.manager.scanWhenDone

then right click on it and Toggle. Close and reopen Firefox and try to download something in Firefox.

Sometimes if you boot into Safe Mode with Networking it will work:

(Reboot and when you see the maker's logo, hear a beep or it talks about F8, start tapping the F8 key slowly. Keep tapping until the Safe Mode Menu appears and choose Safe Mode with Networking. Login with your usual login.)
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#5
FEARTheDope

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I have completed the following tasks

"Following is a workaround for Vista/Win 7. This defeats the security feature that calls for the scan.

Copy the lines between the stars (but not the stars):

****************
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Attachments]
"ScanWithAntiVirus"=dword:00000001


****************

Open notepad and paste the above into it. Verify that you have it all then File, Save As, (to your desktop) "NoScan.reg" OK (Make sure you includes the quotes around the file name)

Close notepad. Right click on NoScan.reg and select Merge. Allow it to merge. (If you don't see the Merge option you probably left off the quotes and notepad tacked on .txt)"

Do I also do the Mozilla Firefox part? I currently do not have that installed on my computer, as I only have Google Chrome and Internet Explorer.
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#6
FEARTheDope

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Also, I have completed the task of making a notepad, and copying and pasting the following into it


Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Attachments]
"ScanWithAntiVirus"=dword:00000001



As I completed that, I attempted to run Microsoft Security Essentials, and attempted to download the file from your 1st reply.
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#7
RKinner

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Unlikely that you could download Firefox if you can't download Frst.

The work around will not make Microsoft Security Essentials work. If it works at all it should all downloads. Did you right click on the file and select Merge?
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#8
FEARTheDope

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Yes I have right clicked and Merged
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#9
RKinner

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OK. If you still can't download then it's probably the Zero Access malware. You will have to get a friend to download the FRST file and put it on a CD or a USB drive then move it to the sick computer and copy the file to your desktop.
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#10
FEARTheDope

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Ok, thank you for your help sir. Very much appreciated. Have a good day.
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