Seemingly a DLL problem ...
Win 7 Pro 64-bit
I get this error message when in Devices|Printers I click on default printer and seek info on "See What's Printing Now"
C:\Windows\system32\rundll32.exe is not a valid Win32 application
I get the same message when accessing some other parts of Win 7 (e.g. change screen saver), and even though this has been going on for several months I do NOT get a DLL error message in applications; printer does work; and while this is occasionally an annoyance it does NOT seem to be getting worse and so I have ignored it. I do not recall installing any particular software immediately before noticing the DLL error message, however since I only get the error rarely (as I do not want to check what is printing, or change screen saver, or the few other things that give an error) it is possible that some software installation "created" the problem. What is your advice?
=========== some other details ==========
I've done some reading on DLL problems and while I am pretty comfortable around computers, from reading there are some dire warnings about DLL download file websites as well as the free system scans and etc. Hence it seems that by intervening I might make matters worse, or at least consume a bunch of time "fixing" the problem as well as the likely need to re-install various applications. I had been considering Reimage software and that is how I found this site and its thread which raises lots of concerns about this software for fixing DLL problems.
I have run MalwareBytes as well as AdAware and only the latter found 1 tracking cookie. I use Norton Security Suite and generally am not on dangerous websites. Have software and hardware firewall.
My laptop is slightly more than a year old. I have an image of it after I had done most of my software installations, but there have been perhaps a half dozen subsequent to that time. I have data backups. Win restore points do NOT go back far enough to get to a non-problematic place.
I have the Lenovo DVD Operating System Recovery Disc for Win 7 Professional
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rundll32.exe is
in C:\Windows\System32 44.5 KB (45,568 bytes) created July 13, 2009 (no version number indicated)
Also in C:\Windows\SysWOW64 43.5 KB (44,544 bytes) created July 13, 2009 43.5 KB (44,544 bytes)
A copy of each of the above files seem to also be stored in a different subfolder as well.
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Based on a different website I did run SFC and the scan results shows some problems that SFC was unable to fix (has mismatch; corrupted file):
For example ...
2011-09-30 18:41:05, Info CSI 0000014a [SR] Cannot repair member file [l:24{12}]"rundll32.exe" of
Microsoft-Windows-rundll32, Version = 6.1.7600.16385, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, hash mismatch
2011-09-30 18:41:06, Info CSI 0000014c [SR] Cannot repair member file [l:24{12}]"rundll32.exe" of Microsoft-Windows-rundll32, Version = 6.1.7600.16385, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, hash mismatch
2011-09-30 18:41:06, Info CSI 0000014d [SR] This component was referenced by [l:202{101}]"Microsoft-Windows-Foundation-Package~31bf3856ad364e35~amd64~~6.1.7601.17514.WindowsFoundationDelivery"
2011-09-30 18:41:06, Info CSI 00000150 [SR] Could not reproject corrupted file [ml:520{260},l:46{23}]"\??\C:\Windows\System32"\[l:24{12}]"rundll32.exe"; source file in store is also corrupted
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2011-09-30 18:40:33, Info CSI 00000123 [SR] Cannot repair member file [l:62{31}]"Circle_SelectionSubpictureA.png" of Microsoft-Windows-OpticalMediaDisc-Styles, Version = 6.1.7600.16385, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, hash mismatch
2011-09-30 18:40:33, Info CSI 00000125 [SR] Cannot repair member file [l:70{35}]"circleround_selectionsubpicture.png" of Microsoft-Windows-OpticalMediaDisc-Styles, Version = 6.1.7600.16385, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, hash mismatch
2011-09-30 18:40:41, Info CSI 00000127 [SR] Cannot repair member file [l:62{31}]"Circle_SelectionSubpictureA.png" of Microsoft-Windows-OpticalMediaDisc-Styles, Version = 6.1.7600.16385, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, hash mismatch
2011-09-30 18:40:41, Info CSI 00000128 [SR] This component was referenced by [l:196{98}]"Microsoft-Windows-OpticalMediaDisc-Package~31bf3856ad364e35~amd64~~6.1.7601.17514.OpticalMediaDisc"
2011-09-30 18:40:41, Info CSI 0000012a [SR] Cannot repair member file [l:70{35}]"circleround_selectionsubpicture.png" of Microsoft-Windows-OpticalMediaDisc-Styles, Version = 6.1.7600.16385, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, hash mismatch
2011-09-30 18:40:41, Info CSI 0000012b [SR] This component was referenced by [l:196{98}]"Microsoft-Windows-OpticalMediaDisc-Package~31bf3856ad364e35~amd64~~6.1.7601.17514.OpticalMediaDisc"
2011-09-30 18:40:41, Info CSI 0000012e [SR] Could not reproject corrupted file [ml:520{260},l:94{47}]"\??\C:\Program Files\DVD Maker\Shared\DvdStyles"\[l:62{31}]"Circle_SelectionSubpictureA.png"; source file in store is also corrupted
2011-09-30 18:40:41, Info CSI 00000131 [SR] Could not reproject corrupted file [ml:520{260},l:94{47}]"\??\C:\Program Files\DVD Maker\Shared\DvdStyles"\[l:70{35}]"circleround_selectionsubpicture.png"; source file in store is also corrupted
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2011-09-30 18:42:10, Info CSI 00000182 [SR] Cannot repair member file [l:32{16}]"upnphost.dll.mui" of Microsoft-Windows-UPnPDeviceHost.Resources, Version = 6.1.7600.16385, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture = [l:10{5}]"en-US", VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, hash mismatch
2011-09-30 18:42:13, Info CSI 00000184 [SR] Cannot repair member file [l:32{16}]"upnphost.dll.mui" of Microsoft-Windows-UPnPDeviceHost.Resources, Version = 6.1.7600.16385, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture = [l:10{5}]"en-US", VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, hash mismatch
