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Cannot repair installation due to corrupted dll (and more). How to proceed?
#1
Hi guys, it seems that you are my last hope for a very puzzling issue...

I am experiencing weird problems with my Windows 7 installation, such as:

* RSS feed support gone
* Many manteinance options in Control Panel hang
* Recovery disk does not recognize the installation
* Cannot install the System Update Readiness Tool (the installer dies immediately)
* Etc.

I ran SFC as per [https://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html], and it found the following errors:

2015-03-06 02:20:10, Info CSI 00000070 [SR] Cannot repair member file [l:24{12}]"cosquery.dll" of Microsoft-Windows-Application-Experience-Upgrade-Compat-Telemetry, Version = 6.1.7601.18742, 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
2015-03-06 02:20:12, Info CSI 00000072 [SR] Cannot repair member file [l:24{12}]"cosquery.dll" of Microsoft-Windows-Application-Experience-Upgrade-Compat-Telemetry, Version = 6.1.7601.18742, 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
2015-03-06 02:20:12, Info CSI 00000073 [SR] This component was referenced by [l:154{77}]"Package_3_for_KB2952664~31bf3856ad364e35~amd64~~6.1.8.2.2952664-6_neutral_GDR"
2015-03-06 02:20:12, Info CSI 00000076 [SR] Could not reproject corrupted file [ml:520{260},l:66{33}]"\??\C:\Windows\System32\CompatTel"\[l:24{12}]"cosquery.dll"; source file in store is also corrupted

The Cosquery.dll file is in fact 0 bytes long, so I tried to manually download and substitute the file, but the error remained intact.

I tried the inplace upgrade repair procedure described at https://briteccomputers.co.uk/?s=repair+install very carefully, but it crashed with the
"Windows Setup could not configure Windows on this computer’s hardware." message.

The Upgrade Advisor reported no problems, but they are of course present.

I did try changing the HDD controller according to https://support.microsoft.com/kb/2466753 to IDE (it wasn't RAID in the first place), but it didn't change one thing.


How should I proceed (of course keeping my installation, files, installed programs, etc., if possible)?

Thank you in advance for your help!
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#2
were did you get your copy of windows 7 is its a genuine copy?
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#3
Try this:
  • Click the Start button.
  • Type "cmd" in the search box. Right click cmd and Run as Administrator press ENTER 
  • UAC permission dialog box will pop up, click Yes
  • Type: regsvr32 /u cosquery.dll 
  • Then press ENTER. This will UN-REGISTER cosquery.dll.
  • Type: regsvr32 /i cosquery.dll
  • Then press ENTERThis will RE-REGISTER cosquery.dll.
  • Now you can close the command prompt window.
  • Re-start your computer
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