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S-1-5-20 Key is missing from registry in windows vista

Operating Systems


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  #1  
Old 11-03-2012
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S-1-5-20 Key is missing from registry in windows vista
  

I am having windows Home Premium and it is failing WGA test as the whole HKU\S-1-5-20 Key is missing from the registry. I have tried replicating the same from a VM but then I am not able to delete the Key but then I am not having any issues in clearing the Key, is there anyone who has faced the same and has an idea about it??

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  #2  
Old 11-03-2012
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Re: S-1-5-20 Key is missing from registry in windows vista

Quote:
I am having windows Home Premium and it is failing WGA test as the whole HKU\S-1-5-20 Key is missing from the registry. I have tried replicating the same from a VM but then I am not able to delete the Key but then I am not having any issues in clearing the Key, is there anyone who has faced the same and has an idea about it??

Before I suggest you something about the same I just wanted to know that what is the REG QUERY HKU returning??? Other than this also check out the permissions on HKU and see if they are correct or not.
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  #3  
Old 11-03-2012
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Join Date: Feb 2012
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Re: S-1-5-20 Key is missing from registry in windows vista

I have checked out the same below are the things that are appearing in the
Quote:
REG QUERY HKU:
HKEY_USERS\.DEFAULT
HKEY_USERS\S-1-5-19
HKEY_USERS\S-1-5-21-vvvvvvvvvvvvvvvvvvvvvvvvvv-1000
HKEY_USERS\S-1-5-21-vvvvvvvvvvvvvvvvvvvvvvvvvv-1000_Classes
HKEY_USERS\S-1-5-18
REG ADD HKU\S-1-5-20 returns
ERROR: The parameter is Incorrect
I have also checked out the permissions and it is appearing to be fine, it is followed as below:
  • Everyone- read
  • Restricted- read
  • System- full control, read
  • Administrators- full control, read
Is there anything else that I have to check????
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  #4  
Old 11-03-2012
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Join Date: Jul 2011
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Re: S-1-5-20 Key is missing from registry in windows vista

I have checked out for the same and have found the below solution to be solving out this issue:
  • First just Run CHKDSK /R so that it fixes the filesystem if there is any
  • After that just delete the NTUSER.DAT file which will be in the Network Service profile.
  • When you are done with the same then just copy the Default userís NTUSER.DAT file from the Network Service profile and then make sure that you are also emending permissions so that the Network Service gets the Full Control.
Just try out the same and see if it is helping.
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  #5  
Old 11-03-2012
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Join Date: May 2011
Posts: 397
Re: S-1-5-20 Key is missing from registry in windows vista

As far as I am aware these keys rely under "C:\Windows\ServiceProfiles\NetworkService\NTUSER.DAT"
They are controlled by the key that is missing which is:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\S-1-5-20
So you can very well try out the solution that has been mentioned above but then other than this make sure that you are running MGADiag as well.
Just try out the same and then post back the result that you get.
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  #6  
Old 12-03-2012
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Re: S-1-5-20 Key is missing from registry in windows vista

If the registry hive might have gone corrupted then you can just try out loading it again and in order to do the same just run the below command in the command prompt.
ďreg load HKU\Test "C:\Windows\ServiceProfiles\NetworkService\NTUSER.DAT"
After this just check out if there is any error and see if the subkeys cab be read in Regedit and also test out the security of a random key.
I think that loading the hive manually will help you out, just try out the same and then let me know if it is helping.
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