Why is Explorer.exe reading my program files at startup?

Every time I boot my computer, if I open Resource Monitor, I will inevitably find, under the "Disk Activity" section, the process explorer.exe "reading" my program files.
When I say "program files", I mean the executable files for applications stored in the "C:\Program Files (x86)" or the "C:\Program Files" directories.
Other files seem to get "read" a lot too. PNF files for example.
I have indexing turned OFF on all drives, and yet the process SearchIndexer.exe is almost always running too.

Hi,
Firstly, did you installed MSE in your system, this phenomenon can be caused by MSE security scanning disk.
Secondly, this problem can also be caused by 3rd program, it would be better to use AutoRuns to check system startup items if there is any 3rd process or dll file start with system.
AutoRuns:http://technet.microsoft.com/en-us/sysinternals/bb963902.aspx
Roger Lu
TechNet Community Support

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Gar Benedick wrote:
Asatoran,
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Hi PontusL,
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--James
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I used the sxstrace tool to find the error but ill admit im not sure what im doing. If you can please help me identify whats wrong that would be great!
=================
Begin Activation Context Generation.
Input Parameter:
Flags = 0
ProcessorArchitecture = Wow32
CultureFallBacks = en-US;en
ManifestPath = C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\WDExpress.exe
AssemblyDirectory = C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\
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INFO: Resolving reference for ProcessorArchitecture WOW64.
INFO: Resolving reference for culture en-US.
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INFO: No publisher policy found.
INFO: No binding policy redirect found.
INFO: Begin assembly probing.
INFO: Did not find the assembly in WinSxS.
INFO: Attempt to probe manifest at C:\Windows\assembly\GAC_32\Microsoft.Windows.Common-Controls\6.0.0.0_en-US_6595b64144ccf1df\Microsoft.Windows.Common-Controls.DLL.
INFO: Did not find manifest for culture en-US.
INFO: End assembly probing.
INFO: Resolving reference for culture en.
INFO: Applying Binding Policy.
INFO: No publisher policy found.
INFO: No binding policy redirect found.
INFO: Begin assembly probing.
INFO: Did not find the assembly in WinSxS.
INFO: Attempt to probe manifest at C:\Windows\assembly\GAC_32\Microsoft.Windows.Common-Controls\6.0.0.0_en_6595b64144ccf1df\Microsoft.Windows.Common-Controls.DLL.
INFO: Did not find manifest for culture en.
INFO: End assembly probing.
INFO: Resolving reference for culture Neutral.
INFO: Applying Binding Policy.
INFO: No publisher policy found.
INFO: No binding policy redirect found.
INFO: Begin assembly probing.
INFO: Did not find the assembly in WinSxS.
INFO: Attempt to probe manifest at C:\Windows\assembly\GAC_32\Microsoft.Windows.Common-Controls\6.0.0.0__6595b64144ccf1df\Microsoft.Windows.Common-Controls.DLL.
INFO: Did not find manifest for culture Neutral.
INFO: End assembly probing.
INFO: Resolving reference for ProcessorArchitecture x86.
INFO: Resolving reference for culture en-US.
INFO: Applying Binding Policy.
INFO: No publisher policy found.
INFO: No binding policy redirect found.
INFO: Begin assembly probing.
INFO: Did not find the assembly in WinSxS.
INFO: Attempt to probe manifest at C:\Windows\assembly\GAC_32\Microsoft.Windows.Common-Controls\6.0.0.0_en-US_6595b64144ccf1df\Microsoft.Windows.Common-Controls.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en-US\Microsoft.Windows.Common-Controls.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en-US\Microsoft.Windows.Common-Controls.MANIFEST.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en-US\Microsoft.Windows.Common-Controls\Microsoft.Windows.Common-Controls.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en-US\Microsoft.Windows.Common-Controls\Microsoft.Windows.Common-Controls.MANIFEST.
INFO: Did not find manifest for culture en-US.
INFO: End assembly probing.
INFO: Resolving reference for culture en.
INFO: Applying Binding Policy.
INFO: No publisher policy found.
INFO: No binding policy redirect found.
INFO: Begin assembly probing.
INFO: Did not find the assembly in WinSxS.
INFO: Attempt to probe manifest at C:\Windows\assembly\GAC_32\Microsoft.Windows.Common-Controls\6.0.0.0_en_6595b64144ccf1df\Microsoft.Windows.Common-Controls.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en\Microsoft.Windows.Common-Controls.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en\Microsoft.Windows.Common-Controls.MANIFEST.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en\Microsoft.Windows.Common-Controls\Microsoft.Windows.Common-Controls.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en\Microsoft.Windows.Common-Controls\Microsoft.Windows.Common-Controls.MANIFEST.
INFO: Did not find manifest for culture en.
INFO: End assembly probing.
INFO: Resolving reference for culture Neutral.
INFO: Applying Binding Policy.
INFO: Auto Servicing Policy redirected assembly version.
INFO: Post policy assembly identity is Microsoft.Windows.Common-Controls,processorArchitecture="x86",publicKeyToken="6595b64144ccf1df",type="win32",version="6.0.7601.17514".
INFO: Begin assembly probing.
INFO: Attempt to probe manifest at C:\Windows\WinSxS\manifests\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.17514_none_41e6975e2bd6f2b2.manifest.
INFO: Manifest found at C:\Windows\WinSxS\manifests\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.17514_none_41e6975e2bd6f2b2.manifest.
INFO: End assembly probing.
INFO: Resolving reference Microsoft.Windows.Common-Controls.mui,language="*",processorArchitecture="x86",publicKeyToken="6595b64144ccf1df",type="win32",version="6.0.7601.17514".
INFO: Resolving reference for ProcessorArchitecture WOW64.
INFO: Resolving reference for culture en-US.
INFO: Applying Binding Policy.
INFO: No publisher policy found.
INFO: No binding policy redirect found.
INFO: Begin assembly probing.
INFO: Did not find the assembly in WinSxS.
INFO: Attempt to probe manifest at C:\Windows\assembly\GAC_32\Microsoft.Windows.Common-Controls.mui\6.0.7601.17514_en-US_6595b64144ccf1df\Microsoft.Windows.Common-Controls.mui.DLL.
INFO: Did not find manifest for culture en-US.
INFO: End assembly probing.
INFO: Resolving reference for culture en.
INFO: Applying Binding Policy.
INFO: No publisher policy found.
INFO: No binding policy redirect found.
INFO: Begin assembly probing.
INFO: Did not find the assembly in WinSxS.
INFO: Attempt to probe manifest at C:\Windows\assembly\GAC_32\Microsoft.Windows.Common-Controls.mui\6.0.7601.17514_en_6595b64144ccf1df\Microsoft.Windows.Common-Controls.mui.DLL.
INFO: Did not find manifest for culture en.
INFO: End assembly probing.
INFO: Resolving reference for ProcessorArchitecture x86.
INFO: Resolving reference for culture en-US.
INFO: Applying Binding Policy.
INFO: No publisher policy found.
INFO: No binding policy redirect found.
INFO: Begin assembly probing.
INFO: Did not find the assembly in WinSxS.
INFO: Attempt to probe manifest at C:\Windows\assembly\GAC_32\Microsoft.Windows.Common-Controls.mui\6.0.7601.17514_en-US_6595b64144ccf1df\Microsoft.Windows.Common-Controls.mui.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en-US\Microsoft.Windows.Common-Controls.mui.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en-US\Microsoft.Windows.Common-Controls.mui.MANIFEST.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en-US\Microsoft.Windows.Common-Controls.mui\Microsoft.Windows.Common-Controls.mui.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en-US\Microsoft.Windows.Common-Controls.mui\Microsoft.Windows.Common-Controls.mui.MANIFEST.
INFO: Did not find manifest for culture en-US.
INFO: End assembly probing.
INFO: Resolving reference for culture en.
INFO: Applying Binding Policy.
INFO: No publisher policy found.
INFO: No binding policy redirect found.
INFO: Begin assembly probing.
INFO: Did not find the assembly in WinSxS.
INFO: Attempt to probe manifest at C:\Windows\assembly\GAC_32\Microsoft.Windows.Common-Controls.mui\6.0.7601.17514_en_6595b64144ccf1df\Microsoft.Windows.Common-Controls.mui.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en\Microsoft.Windows.Common-Controls.mui.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en\Microsoft.Windows.Common-Controls.mui.MANIFEST.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en\Microsoft.Windows.Common-Controls.mui\Microsoft.Windows.Common-Controls.mui.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\en\Microsoft.Windows.Common-Controls.mui\Microsoft.Windows.Common-Controls.mui.MANIFEST.
INFO: Did not find manifest for culture en.
INFO: End assembly probing.
INFO: Resolving reference debuggerproxy.dll,processorArchitecture="X86",type="win32",version="1.0.0.0".
INFO: Resolving reference for ProcessorArchitecture WOW64.
INFO: Resolving reference for culture Neutral.
INFO: Applying Binding Policy.
INFO: No binding policy redirect found.
INFO: Begin assembly probing.
INFO: Did not find the assembly in WinSxS.
INFO: Did not find manifest for culture Neutral.
INFO: End assembly probing.
INFO: Resolving reference for ProcessorArchitecture x86.
INFO: Resolving reference for culture Neutral.
INFO: Applying Binding Policy.
INFO: No binding policy redirect found.
INFO: Begin assembly probing.
INFO: Did not find the assembly in WinSxS.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\debuggerproxy.dll.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\debuggerproxy.dll.MANIFEST.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\debuggerproxy.dll\debuggerproxy.dll.DLL.
INFO: Attempt to probe manifest at C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\debuggerproxy.dll\debuggerproxy.dll.MANIFEST.
INFO: Did not find manifest for culture Neutral.
INFO: End assembly probing.
ERROR: Cannot resolve reference debuggerproxy.dll,processorArchitecture="X86",type="win32",version="1.0.0.0".
ERROR: Activation Context generation failed.
End Activation Context Generation.

Hello,
I saw a related thread from here:
http://stackoverflow.com/questions/15130609/visual-studio-2012-side-by-side-configuration-is-incorrect
The dll in that thread is different from there but I think you can still try the solution listed there to repair your VS installation.
May I clarify some questions? Can you use Visual Studio before you get this error? Is it the first time you installed Visual Studio and when you try to open it it reports this error for you?
If you can use Visual Studio before you get this error, please try repair Visual Studio from control panel.
If you cannot use Visual Studio even when it is the first time to load, then it is a corrput installtion problem. Please remove the current installation:
http://support.microsoft.com/en-us/kb/2771441 Then download and verify the ISO:https://www.visualstudio.com/en-us/downloads/visual-studio-2013-iso-sha1-vs
And restart the installtion with a healthy ISO.
Anyway, in my mind refer to the first stackoverflow thread and repair the installtion to fix this missing dll problem is more reasonable.
Best regards,
Barry
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Click
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Windows 8.1 "explorer.exe" gradually slows down - Observation

Hi, I posted a question a year ago about Windows 8.1 gradually slows down issue, and it seems still not being solved. I recently found some new clues about this, hope it can be useful. (Please read the original post first
since it contains basic descriptions of the issue:
https://social.technet.microsoft.com/Forums/en-US/f9ab40a8-6681-4c66-bdbd-9de7b2fb021f/windows-81-gradually-slows-down-after-hours-speed-returns-normal-if-restart-explorerexe?forum=w8itproperf)
This issue is found to be somehow related to total Page Faults of explorer.exe since it starts. The majority of page fault is created by desktop background slide show. On my laptop, the slide show is set to randomly switch between 53 jpegs
(mostly 1920*1080) every 10 seconds. The Page Fault Delta of explorer.exe is usually 2 per second when not doing anything, and tenth to hundreds when there are some actions. But at the instance when the background is switching, it will peak to a value
between 13,000 and 30,000.
I don't know if this value is normal or not, but when the total Page Faults reaches about 20,000,000, a slight slow-down can be observed by moving your mouse up and down on the favorite bar items in IE (the right bar shown when pressing Alt+C
in IE), a slight lag can be observed. The slow down (slightly) of normal windows can be observed when Page Faults reaches about 40,000,000. At that time, the mouse lag on favorite bar items becomes much more obvious. After another few hours, the slow-down
will become more serious.
I tried to disable the slide show by only using one background image, the total Page Fault stays low and the slow-down issue does not occur after one day (the Page Fault after one day is also far less than 20,000,000). That's why restarting explorer.exe
can temporarily fix it. I tried it on 2 other Windows 8.1 computers and get the same results. Maybe there is some memory allocation or fragmentation problem building up? One thing I don't know is that if this is caused by the background slide show itself,
or if explorer.exe in general will slow down after experimenting enough page faults.

Polyhedron,
This main reason of this issue is not the Windows system. A page fault occurs under these situation:
1. A program requests an address on a page that is not in the current set of memory resident pages.
2. The virtual memory system has become unstable because of a shortage of physical memory (RAM).
3. The virtual memory system has become unstable because of a shortage of free disk space.
4. The virtual memory area is corrupted by a program.
5. A program is attempting to access data that is being modified by another program that is running.
Please refer this blog to determine it's hard faults or soft faults.
The Basics of Page Faults
http://blogs.technet.com/b/askperf/archive/2008/06/10/the-basics-of-page-faults.aspx
In addition, from your description, since the background slide itself is without problem, I suspect the root is your ram. Try to increase the amount of memory or reduce the cache size for test.
Karen Hu
TechNet Community Support

Why is Explorer.exe reading my program files at startup?

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