Can't access "Network and Sharing Center" nor "User Accounts"

The control panel opens fine. I can access all items in the control panel
except "Network and sharing center" and the "User accounts" (I can't access this sections via the taskbar either).

What happens when I open one of the two items is I get a popup saying the
following; WINDOWS EXPLORER HAS STOPPED WORKING.

I used to be able to access these items. And one day, I just coulodn't anymore...

Anyone knows how to solve this? Thanks.

I'm using Vista Ultimate x64

 

Did you install any software or click Ok on a UAC dialog before this happened? If not, have you done a scandisk lately? I'd highly recommend it. Things shouldn't just stop working randomly.

 

I've done scandisk. No problems found. And no, I haven't installed any software. Just Windows updates...

 

I tried to run the SFC on an Administrator Console. I get the following error: "Windows Resource Protection could not start the repair service."

 

arlab try this

http://support.microsoft.com/kb/929833

 

OK. Instead of running an administrator console from a shortuct (that made the first path of the console be C:\Windows\system32), I've run the console from the Start Menu (that goes to C:\Users\<myUserName>).

Running sfc \scannow from there worked...

According to the log, the file "shigna.dll" is corrupt:

Code:

2008-10-18 12:24:29, Info                  CSI    00000173 [SR] Cannot repair member file [l:20{10}]"shgina.dll" of Microsoft-Windows-shgina, Version = 6.0.6001.18000, 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
2008-10-18 12:24:31, Info                  CSI    00000175 [SR] Cannot repair member file [l:20{10}]"shgina.dll" of Microsoft-Windows-shgina, Version = 6.0.6001.18000, 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
2008-10-18 12:35:15, Info                  CSI    0000032e [SR] Cannot repair member file [l:20{10}]"shgina.dll" of Microsoft-Windows-shgina, Version = 6.0.6001.18000, 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
2008-10-18 12:35:15, Info                  CSI    00000333 [SR] Cannot repair member file [l:20{10}]"shgina.dll" of Microsoft-Windows-shgina, Version = 6.0.6001.18000, 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

Although there are four entries, am I right to assume that the error is in only one "shigna.dll" file?

 

arlab , then try getting a fresh copy from Internet or Vista DVD

 

That's too big. I got a non corrupt copy of the dll I was needing, from here.

It worked. Everything seems to be fine. Thanks for the help!