How to remove the msprxcore virus
Most antivirus programs identify msprxcore.dll as malware, for example Sophos identifies it as OpenWares ContextuAd, and BitDefender identifies it as Adware.Mediaback.D.
The free file information forum can help you find out how to remove it. If you know more about this file, please leave a comment or a hint for other users.
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Msprxcore.dll file information
The process known as MSProxy Support Dll appears to be part of software msprxcore by unknown.
Description: msprxcore.dll is located in the folder C:\Windows\System32.
The file size on Windows 7/XP is 126,976 bytes. 
This .dll file is a Browser Helper Object (BHO) that runs automatically every time you start your Internet browser. BHOs are not stopped by personal firewalls, because they are identified by the firewall as your browser itself. BHOs are often used by adware and spyware.
The unique ID of this BHO is 1920E150-5D27-4B95-B60B-D68B78928441 or 830DE650-EBE7-434F-99AA-8DCBCDACBD7B.
There is no file information. The program is not visible. It is located in the Windows folder, but it is not a Windows core file. It is able to change the behavior or monitor Internet Explorer. The service has no detailed description. The file is not a Windows system file.
Therefore the technical security rating is 77% dangerous.
Recommended: Identify msprxcore.dll related errors
Important: Some malware camouflages itself as msprxcore.dll, particularly when located in the c:\windows or c:\windows\system32 folder. Therefore, you should check the msprxcore.dll process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.
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Msprxcore scanner
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Other processes
spoclsv.exe mstsdsc.exe sbiectrl.exe msprxcore.dll defragactivitymonitor.exe wsock32.sys adminsvcff.exe ntaskldr.exe raysat_3dsmax2010_32server.exe firelm01.sys gxho.exe [all]