Windows 10: Can't Login - User Profile Service Failed

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  1.    26 Dec 2015 #11

    Thanks. Also note when I create a new user account now it doesn't show up under ProfileList using REGEDIT since it is not possible to log on the account for the first time!

    I like to fix problems if possible. It seems to me the wrong permissions or defaults are being given to a new account. Is there a way of checking and fixing the problem directly? I have the profile c:\users\default. Is it worth replacing this with the version from my backup in case it is corrupted?
      My ComputersSystem Spec


  2. Posts : 29,305
    64-bit Windows 10 Pro build 17672
       26 Dec 2015 #12

    Only using the tutorial for that error. When that fails, a repair install would be a good option.
      My ComputersSystem Spec

  3.    27 Dec 2015 #13

    I found one fix to replace the default profile c:\users\default with a backup default profile (from my Macrium Reflect Backup) but that didn't solve the problem. I also get Event ID 1500 & 1511 errors as shown below. I'm researching more fixes before trying a repair install.

    Log Name: Application
    Source: Microsoft-Windows-User Profiles Service
    Date: 27/12/2015 06:44:58
    Event ID: 1500
    Task Category: None
    Level: Error
    Keywords:
    User: S-1-5-21-1736640127-1942293974-1939415850-1027
    Computer: MyLaptop
    Description:
    Windows cannot log you on because your profile cannot be loaded. Check that you are connected to the network, and that your network is functioning correctly.


    DETAIL - Access is denied.


    Log Name: Application
    Source: Microsoft-Windows-User Profiles Service
    Date: 27/12/2015 06:44:58
    Event ID: 1511
    Task Category: None
    Level: Error
    Keywords:
    User: S-1-5-21-1736640127-1942293974-1939415850-1027
    Computer: MyLaptop
    Description:
    Windows cannot find the local profile and is logging you on with a temporary profile. Changes you make to this profile will be lost when you log off.
      My ComputersSystem Spec

  4.    27 Dec 2015 #14

    I've found a fix for my problems:

    1. I copied the ntuser.dat file from my backup working admin account to folder c:\users\default. I can now create and log in to a new user account which appears with the default icons - but I don't see the getting things ready spinning icon. Is this a problem and why does copying ntuser.dat fix the problem?
    2. I had various issues with my normal admin account following the system restore e.g. I couldn't set a picture background and had problems with the Chrome configuration. I copied the admin account profile files from my Reflect backup and this account is now working fine.

    I'm wondering if I should still do an in place repair since I had to use another version of ntuser.dat to get the system working? I tried copying over ntuser.dat from my Reflect backup folder c:\user\default but that gave the profile error. Is that because ntuser.dat depends on the version of Windows? There have been a few build updates since my last backup on 6/1/15.
      My ComputersSystem Spec


  5. Posts : 29,305
    64-bit Windows 10 Pro build 17672
       27 Dec 2015 #15

    Yeah, since you're still having issues, it may be best to try a repair install.
      My ComputersSystem Spec

  6.    27 Dec 2015 #16

    All seems fine at the moment. Are there any problems in 'pinching' nutuser.dat from another account and copying it to c:\users\default? Also, does ntuser.dat depend on the release version of Windows?
      My ComputersSystem Spec


  7. Posts : 29,305
    64-bit Windows 10 Pro build 17672
       27 Dec 2015 #17

    The Ntuser.dat file is a registry file. Each user's Ntuser.dat file contains the registry settings for their individual account. The configuration of the "HKEY_CURRENT_USER" branch of the registry is supported by the current user's Ntuser.dat file.

    Contents of a user profile

    If you're not having anymore issues, then you should be fine.
      My ComputersSystem Spec

  •    27 Dec 2015 #18

    Thanks - I learn something new every time I have a Windows problem.

    What initiates the "Getting things ready" intro which I don't see now for a new user since I've copied across the ntuser.dat file from another user? Also, does ntuser.dat depend on the Windows release version since I can't work out why copying across the version of ntuser.dat from 4 weeks ago doesn't fix the problem?
      My ComputersSystem Spec


  • Posts : 29,305
    64-bit Windows 10 Pro build 17672
       27 Dec 2015 #19

    ntuser.dat is basically the HKCU branch in the registry for a user account. I would imagine that if it's not current, it may not work.
      My ComputersSystem Spec

  •    28 Dec 2015 #20

    I found a reference to this command - icacls c:\users\default /T /Q /C /Reset - as a possible fix to the ntuser.dat problem file in c:\users\default.

    I plan to try the icacls command fix (having backed up the currently operative c:\user\default folder). Before I do so, can someone confirm this command is the correct way to set default permissions for the c:\users\default folder?
      My ComputersSystem Spec


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