What Does It Mean When User Profile Service Failed The Logon

Sometimes, when you log on to Windows ten after entering the username and password, yous may see an error "The User Contour Service failed the sign-in. User profile cannot be loaded". The login is non performed, and you are asked to specify the username and password repeatedly. Amidst the most common mistakes with loading a user profile are:

Corrupted user profile on disk (local or roaming);
Antivirus software that performs files scanning and blocking in the contour folder at the fourth dimension of potency. This causes an error when loading the user contour;
Corrupted Windows registry file;
Corrupted default profile or incorrectly configured NTFS permissions.

Let'due south consider how to ready User contour cannot be loaded error in Windows 10 and log on into the system.

Commencement of all, nosotros recommend restarting your computer and effort to log in using your business relationship. If the reboot didn't help, get to the following methods.

Error "User Profile Cannot exist loaded" When Logging in With a New User

If the error The User Profile Service failed the sign-in appears when yous first log in to the system under a new account, information technology means that the Default profile is corrupted or the permissions on the Default contour folder have been inverse. The default profile is the directory with the profile template for all users of this computer. Default profile settings are copied to the new contour at the beginning logon. If the C:\Users\Default directory is corrupted or missing, the Windows Contour service won't exist able to copy data from this directory to the new profile directory.

The principal file in the Default Profile folder is NTUSER.DAT. This file stores user profile settings, preferences, configurations, etc. If this file is missing or corrupted, you won't be able to login under your user account.

To fix the trouble, information technology is enough to supersede the damaged C:\Users\Default binder. Copy the aforementioned binder from the working operating system (Windows ten builds should friction match). Verify that the backdrop of the Default binder and the NTFS permissions friction match.

In some cases, it is enough to re-create the C:\Users\Default\ntuser.dat file to ntuser.dat_bak file and replace information technology with the ntuser.dat file from the Guest or Public profile folder on the same computer.

Restart your estimator and endeavour to log in to the new account.

Check the electric current permissions on the C:\Users\Default folder and make sure that it inherits permissions from its parent folder C:\Users. You can list the NTFS permissions with the icacls tool:

icacls c:\Users\Default

Here is the default folder permissions:

NT Potency\Arrangement:(OI)(CI)(F)

BUILTIN\Administrators:(OI)(CI)(F)

BUILTIN\Users:(RX)

BUILTIN\Users:(OI)(CI)(IO)(GR,GE)

Anybody:(RX)

Everyone:(OI)(CI)(IO)(GR,GE)

Error User Profile Cannot be Loaded for Merely One Unmarried User

If only ane user has a problem with the profile, then just the directory or registry entry with the user's profile is damaged. Try to logon as another user with ambassador permissions. If information technology's not possible, boot your Windows 10 in Prophylactic mode, in the recovery console, or the Windows PE surround.

Beginning, check the disk for errors using chkdsk. File system errors are the almost common crusade for corrupted Windows user profiles. Run the command:

chkdsk c: /f /r

Restart your calculator and try to log in. In some cases, this may be enough. If this doesn't help, boot your computer in Safe fashion over again. Open the Services.msc console and make sure the User Profile Service is started and configured to first automatically.

Open the Registy Editor (regedit.exe) and go to the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList;
In the list of the registry cardinal tree, in that location will exist several sections with long names starting with Southward-i-5. Each line corresponds to the security identifier (SID) of a Windows user account and linked to a unmarried user profile. You can list the SIDs of all your local user accounts using the control:
```
wmic useraccount become domain,proper noun,sid
```
To make up one's mind which profile belongs to a specific user, you need to await at the value of the ProfileImagePath parameter. In our example, you can see that key Southward-1-5-21-3650440056-3766451173-3310994491-1001 corresponds to the root user (C:\Users\root). Check if this folder exists on the deejay;
If you detect your user and the proper noun of the registry key doesn't end with .bak, then change the value of the DWORD 32-fleck parameters State and RefCount to 0. If these parameters are missing, create them;
Sometimes, the profile tree for your profile has two sections. One of them ends in .bak. You need to rename the main department to .bak in the registry, and .bak to the principal section. If at that place is only a key with .bak, merely remove this extension;
Verify that the value of the RefCount and State parameters is 0;
Restart the computer. In well-nigh cases, this should set the trouble with the damaged user'south contour.

If this doesn't help, the official documentation Microsoft recommends to create a new account and copy the contour data in that location.

Troubleshooting Errors with the User Contour Service Events

The admin'south manner to troubleshoot the user profile load errors is to analyses the fault events of the User Profile Service. If you can login Window under with a unlike account, you need to open the Event Viewer and become to the section Awarding and Services Logs > Microsoft > Windows > User Contour Service > Operational. Observe the most contempo mistake event in this log.

If you cannot login Windows, you can kicking the device in the Safe Mode and copy the log file "%SystemRoot%\System32\Winevt\Logs\Microsoft-Windows-User Contour Service%4Operational.evtx" to an external USB bulldoze for assay on another computer.

The most common User Contour Service errors for problems loading user profile are:

Event ID 1509:
Windows cannot copy file \\?\C:\Users\Default\ to location \\?\C:\Users\username\. This fault may be caused by network bug or bereft security rights.
Particular – Access is denied
Or
Detail- The file cannot be accessed by the system
Solution : Bank check the permissions on the specified user profile folder.
Event ID 1500:
Windows cannot log you on considering your profile cannot exist loaded. Check that
you are connected to the network and that your network is functioning correctly.
DETAIL – The organization cannot discover the file specified.
Solution : Check if the user profile folder exists on the local bulldoze; brand sure the corresponding registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList points to this folder. Brand sure the NTUSER.DAT file is present in the user contour folder. If this file is removed or corrupted, you will have to manually copy it from another user profile on this estimator or from some other figurer with a similar version of Windows.
Consequence ID 1508:
Windows was unable to load the registry. This problem is oftentimes caused past insufficient memory or insufficient security rights.
DETAIL – The system has attempted to load or restore a file into the registry, merely the specified file is not in a registry file format.
for C:\Users\marco\ntuser.dat
Solution : The NTUSER.DAT in the user contour folder is corrupted and needs to exist replaced (bank check the solution above).

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Cyril Kardashevsky

I relish technology and developing websites. Since 2012 I'm running a few of my own websites, and share useful content on gadgets, PC administration and website promotion.

Cyril Kardashevsky