The User Profile Service service failed to log on to windows 8. User Profile Service failed

Damage account user is a common Windows problem. The problem occurs when you enter a password or pin on the lock screen and when you press enter, you will get the error "User Profile Service failed to log in. User profile could not be loaded" in windows 10 or the User Profile Service is preventing login in Windows 7. .

Solve the problem "User Profile Service failed to log on" using Registry Editor

Option 1: Fix the user account profile

Sometimes your account can be corrupted and this prevents you from accessing files in windows 10. Let's go to the registry editor in several ways, through safe mode:

Step 1. Press keyboard shortcut " windows + R" to call the "execute" command and enter the command regedit to enter the registry.

Step 2. In the window that opens, follow the path:

Step 3. In parameter you will have multiple keys s-1-5. You will need to select the longest key with a long array of numbers and your account on which the "User Profile Service failed to log on" error. Make sure that the path is correct, click on the long key and there should be a name in the right column, if not found, then scroll through all the long keys until you stumble in the right column with your broken profile, in my case the account .

Step 4. If you incorrectly renamed the user profile folder C:\User\site of the affected account, then open File Explorer along the path C:\User\site and click on the broken profile right click mouse, select rename and manually enter the correct profile name (site). After renaming, we go back to the folder in the registry and see that the name is written as in the picture (step 3) C:\User\website.

See two options step 6 and step 7 depending on how

Step 5. Now let's make two options, if we have one long key S-1-5-21-19949....-1001. bak(at the end of the .bak extension) and with the second without .bak those. just S-1-5-21-19949....-1001. Depending on who has two or one profiles lined up.

Step 6. There is only one key at the end of c.bak (S-1-5-21-19949....-1001.bak).

  • A) If you only have one key at the end of c .bak(S-1-5-21-19949....-1001.bak), right-click on it and click rename. (see picture below).

  • B) Delete the word itself with a dot .bak to get just numbers. Continue with step 8. (See the picture below)

Step 7. If you have two identical keys, one without .bak, the other with .bak. (S-1-5-21-19949....-1001 and S-1-5-21-19949....-1001.bak) .

  • A) In the left pane of the registry, right-click on the key without .bak and add a dot, two letters .bk(see picture below).

  • B) Now right-click on the key with .bak, select rename and delete .bak with a dot. (see picture below).

  • C) Now go back and rename the first key with .bk V .bak. Press enter and follow step 8.

Step 8. Highlight the key that was renamed without .bak and with the right in the column, double-click to open the parameter settings, and assign a value of 0. If you do not have such a parameter, then right-click on an empty field and create a DWORD (32-bit) value, rename it to RefCount and set the value to 0.

Step 9. In the right field, select the key without .bak and in the parameter State set the value to 0. If there is no such parameter, then click on the empty field on the right and click create DWORD (32-bit), rename it to State and set the value to 0.

Step 10. Restart your computer and the error "user profile service failed to log in" and "unable to load user profile" in windows 10 should be gone.

Option 2: Delete and create a new user profile for the account

This option will delete the user profile and you will lose all your account settings and personalization.

Step 1. If there is another admin account that doesn't have the error, log out of the current account (for example: site) and log in to the admin account.

If you don't have another admin account to log in, you can do one of the following options below to enable the built-in admin account to log in and skip to Step 2 below.

  • A). Boot into safe mode, enable the built-in Administrator, log out and log in to Administrator.
  • B). Open the window command line when booting, enable the built-in administrator, restart the computer and log in to the Administrator system.

Step 2. Do backup anything you don't want to lose in the C:\Users\(username) profile folder (ex: site) of the corresponding user account to another location. When finished, delete the C:\Users\(username) folder.

Step 3. Click windows buttons+ R to open the Run dialog box, type regedit and click OK.

Step 4. In Registry Editor, navigate to the location below.

  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList

Step 5. In the left pane, in the ProfileList, click on the long key on which the account failed. The profile is visible on the right.

Step 6. Delete profiles with .bak and without .bak errors. Eg ( S-1-5-21-19949....-1001 and S-1-5-21-19949....-1001.bak)-delete.

Step 7. Close the Registry Editor and restart your computer, after which it will automatically recreate the new user.

Let's solve the problem "Unable to load user profile" in a simple way

Method 1. This method It doesn't work for everyone, but it helped a lot of people. Try to copy your documents in the folder (C:\Users\) to another location to create a backup just in case. The problem usually occurs due to a corruption in the "NTUSER.DAT" file located in the "C:\Users\Default" folder. To solve this problem you need to replace the "NTUSER.DAT" file with another profile. .

  1. Log in to the system in safe mode with a profile account that works.
  2. Locate the file (C:\Users\Default) "NTUSER.DAT" and rename the .DAT extension to .OLD. Should be (NTUSER.OLD).
  3. Locate the "NTUSER.DAT" file in the work profile such as "Guest", "General". Example (C:\Users\Guest\NTUSER.DAT).
  4. Copy it and paste it in the default folder C:\Users\Default.
  5. To restart a computer.

You can copy this file from another computer with the same windows version and paste it to yourself along the path C:\Users\Default.

Method 2. You can try replacing the entire "C:\Users\" folder from another computer.

  • Take a flash drive in FAT32 format and write down the C:\Users\ folder from another computer and upload it to your computer.

If anyone knows how else to fix the error, "User Profile Service Prevents Login" by some other method, then write in the "report a bug" form.

If, after creating a new profile in Windows 10, you can't sign in and you receive a notification that "User Profile Service failed to sign in. Failed to load profile”, it is worth making changes to the Explorer and registry settings.

Fixing the error

Such an error in Windows 10 occurs due to damage to the “Default” folder. To fix it, you need to replace the damaged folder with a working one. To do this, perform the following steps.

  • We find a PC with the same version, assembly and bitness of the operating system as yours. Copy the working folder "Default".
  • On your PC, boot from installation disk or, if possible, restart the computer in safe mode. We set the display of hidden folders and files. To do this, in the Explorer options in the "View" tab, set "Show hidden folders, files and disks.

  • We go to the address: "Computer", "Disk C", "Users". Find the "Default" folder.

  • Right-click on the folder and select "Rename".

  • It is advisable to rename it to "Default.old" so that you can compare the identity of the contents of the two folders. Paste the working folder.

  • After replacing the folder, you should restart your computer. The system will boot in the usual mode.

You can also try the method that is suitable for Windows 8 and 8.1. However, before editing the registry, it is worth making a backup copy of it in order to avoid undesirable consequences. Next, we do the following:

  • Press "Win + R" and enter "regedit".

  • Go to the branch "HKEY_LOCAL_MACHINE\ Software\Microsoft\Windows NT\CurrentVersion\ProfileList". We find two sections "S-1-5 ...".

  • The section that ends in .bat needs to be renamed. It is advisable to simply remove the .bat extension.

  • In the next section "S-1-5-21 ..." without the .bat extension, it is worth editing the following parameters: "RefCount" and "State". For them, the value should be "0".

It is worth warning that in Windows 10 there can only be 1 such partition. Therefore, before editing the registry, you should create a system restore point.

What can be done?

1. Go into safe mode (when starting the PC, before Windows boot press the F8 key). Enter in safe mode Start\Control Panel\All Control Panel Items\User Accounts\Windows Account Control.

2. Create a new user.

3. Next, go to the folder c:\users\your-user-name-that-does-not-load(For example c:\users\Dmitry) and copy the contents of the folder Dmitry to a folder newly created user.

4. We reboot, we come under the new user.

Option number 2 (if the first did not help):

1. We go into safe mode under any user (the main thing is that the account is administrator) (I described how to enter safe mode above). Next, open start in the search bar, write regedit. We go into regedit - the window for editing the registry opens. In the registry, go to the following path

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\ProfileList\

In the profilelist folder, we need to find the folder with the ID of the broken profile. Usually this is a folder with .bak, we actually delete the word .bak from the folder name and reboot. If it does not allow you to rename the folder, then most likely there is already a folder with that name. We delete it, then we rename it (we erase the word .bak).

After a reboot it should work fine. Thanks to all. This instruction assumes that your OS is Windows 7, but it will most likely work in other OSes.

If you have any questions, ask them in the comments to the article, we will definitely help you.

When working with the operating system, there are often such things that you can’t even turn on the computer normally and enter the OS - something or someone prevents us from doing this. For example, if the system has been hacked, the thief will not let you enter the user interface, but will require you to send an SMS to short number. In this regard, of course, it is easier - you can simply reinstall the system or enter through safe mode and remove the virus. But what if the system itself does not allow you to enter it, for example, the error “the user service prevents you from entering the system”? We will understand using the example of Windows 10, which is the same as previous versions, was not spared from this error.

Why does this error occur?

When you log in, you are authenticated as a user. If the system thinks you are logging in temporary profile user, but in fact it is not, so there was some specific failure. The same situation can be when you officially enter the system under a temporary profile and still you are not completely successful.

There are several ways to solve this issue - using the registry editor or system restore. Please note that the first option is complicated, but the second one is more accessible for understanding even for novice users. Let's consider each of them in more detail.

Solve the error with regedit

The first thing to do is to log in with the built-in System Administrator. To do this, you need to boot into safe mode. How to enter safe windows mode 7 read, if you have Windows 10, then you. After booting into safe mode, start executing the following instruction:

  1. Press the combination on the keyboard: Win+R, enter the regedit command and press "Enter";

  2. The system will ask you again if you want to enter the Registry Editor, you must click "Yes";

  3. We need to get to the section along the following path:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\ProfileList\

    To do this, there is a folder tree on the left, one by one go to desired folder, according to the specified path. If everything is done correctly, you will see the following window view:

  4. When you enter the last folder, you will see that it contains folders S-1-5-##-#####, Where # - numbers that match yours operating system. Everything works fine for us, but you will have another folder that will be similar in name to the one with the largest name. In addition, the .bak format will be added. We choose one of them;
  5. If opposite ProfileImagePath worth the value C:\Users\your user, then you have found the folder that you need.
  6. This folder needs to be renamed, set to any format at the end, but not .bak, for example .zxc , it doesn’t matter. If you remove it altogether, the error may not be resolved. Rename the second folder, which originally had .bak, so that this extension does not exist at all, in other words, remove the extension from this folder, leave only the name and save the changes.
  7. In the first folder, in which we checked point 5 of this instruction, we change the value RefCount And State on 0 , instead of those that were before. To do this, choose desired parameter, press RMB and click "Edit";

    8. Solve the error using system restore

    The method is quite simple, but not always effective. This is explained by the fact that not all users create restore points, and some simply delete them using programs to “clean up” the system. If you are sure that there is a restore point when the system was working normally, follow the instructions in this instruction:

Sometimes a failure is possible that after a new account has been created in the OS, the PC user cannot log in from it. This depends directly on the fact that Windows has a User Profile Service, due to an error in which nothing works. Read on - the suggested options will help you fix the problem.


What's the first thing you can do if the User Profile Service is preventing Windows 7 logon? Restart your PC and before loading the Windows OS itself, click F8 to go to the menu BIOS. Then choose to start the OS in safe mode , then let it load.


Now open the menu Start (checkbox) and in the search bar below, type User Accounts – select the appropriate line as shown below:



Accordingly, we go to Manage another account . After clicking in the new window, find the line by Create a new account - create and specify account parameters:



The next step is to go to local disk with OS Windows - I have it "WITH", and for almost all users too. Enter the folder Users (may be called Users). You now need to define a couple of folders: the folder for the user who doesn't want to boot, and the folder for the user you just created. Go to the non-loading user folder and copy all the data to the newly created one.



Reboot your PC and log in to the user account where you copied all the data. If the account starts up - great - now you have a new account. an entry with a new name (if you want, you can remove the old one later).


If this solution did not help you, the following should definitely help you.


Similarly, we go to Safe mode from administrator account records. Similarly, we start with start , but in the search bar we indicate regedit:


We launch the registry editing program and now we have to go a very long way! Be careful! We start with a folder called HKEY_LOCAL_MACHINE- and from it we will already go through the branches of folders.


HKEY_LOCAL_MACHINE- start with it - see the screen:



After that SOFTWARE , Now Microsoft , V Windows NT , from it to CurrentVersion and now we find ProfileList .


Inside ProfileList besides the rest there will be two almost identical folders, only at the end of the other one will be added .bak- this is the account that does not let you through.



First, let's deal with the folder without .bak- just rename it, giving it some name, so that in ProfileList it has not been repeated with any other. And the folder with .bak at the end, we just delete this extension - as a result, it will acquire the name of the folder with which you dealt with in the first place - only numbers will remain.


In case you acted according to the description - after rebooting the PC everything should work fine. Let us know if you have resolved the issue where the User Profile Service is preventing logon. What to do in the OS does not work? What was difficult? Leave it in the comments below - we will help you if there are difficulties! Thank you!




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