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A corrupted Windows user Profile can cause serious frustration, especially if your PC / notebook running Windows 10 / Windows / 11 etc. in a Windows Domain or not becomes inaccessible for no obvious reason, even though last day you shut down the PC and everything has been working perfectly fine.

The Corruption of User Profile is a rare problem but for a Domain users it is something you'll likely face at least once in a life time or more. Windows Professionals / Sys Admins shold face it frequently when administering, large domains with multiple joined Windows PCs inside the domain so Windows Pro users should be little known for most common Win users.

Corruption usually happens after improper shutdown / a recent update, due to some recent installation / removal of new software or even for absolutely no reason. You might hit a strange issue, you used your Windows work PC or home laptop for years and suddenly out of nothing you cannot login to the account anymore … 
The gamma of issues testifying of broken profiles is wide.
 
 You may experience temporary profile logins, missing files, broken settings, constant errors, or extremely slow performance. Logging in to the account Giving you a Signining In -> Welcome -> Signing Out Login Loop or sometimes Windows even displays the message:

“You have been signed in with a temporary profile.”

If this happens, don’t panic. In most cases, you can safely recreate your Windows profile without losing personal data.

 

Signs Your User Profile Is Corrupted :

• Temporary profile message
• Desktop resets after reboot
• Missing files
• Apps not saving settings
• Start menu not working
• Extremely slow login

This guide should work for both Windows 10 and Windows 11.

What Causes a Corrupted Windows Profile?

Common causes include:

• Improper shutdowns
• Failed Windows updates
• Disk errors or bad sectors
• Antivirus interference
• Registry corruption
• Power outages

When the profile registry entry or user folder becomes damaged, Windows cannot properly load your account.
 

Windows drops you into Temporary Profile ?

Often if you try to recover your profile, if you have attempted to recover your profile manually or something happened with ntuser.dat file or other profile settings in Registry.

If that's the case Windows logs you into a temporary profile, it usually looks like you have a fresh profile (desktop empty, files missing), even though your original profile still exists. This happens when Windows can’t load your original user profile properly.

Here’s what’s happening and why Windows drops you into this temporary profile (which by the way is recreated every time creating its own Directory like C:\Users\TEMP.AD1 , C:\Users\TEMP.AD2 TEMP.AD3 on each and every windows restart .

Why Windows Uses a Temporary Profile

• Corrupted user profile

Critical files in your original profile (like NTUSER.DAT) may be corrupted.

• Permissions issues

If Windows can’t access your profile folder due to permissions errors.

• Profile in use or locked

If the profile was not closed properly or still in use.

• Disk errors

File system problems can prevent profile loading.

• Registry errors

Windows keeps profile info in the registry (HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList). If it’s misconfigured, the system may create a temporary profile.

Symptoms of a Temporary Profile

• Desktop, Documents, Downloads, and other files appear empty.
• Changes made during the session are lost after logout.
• Windows may show a notification like:

“You have been logged on with a temporary profile. Changes you make will be lost when you log off.”

Before You Start (have Administrator access)

You’ll need:

• Administrator access to the PC
• A backup of important files (if accessible)
• About 15–30 minutes

If you can’t log in normally, boot into Safe Mode / Safe Mode with Networking / Safe Mode with Command Prompt or have some kind of recovery console.

 

1. Create a New User Profile (Best and Recommended approach)

I know you will feel bad that you will loose all your customizations of the Profile, but having empty hopes and loosing times with empty hopes does not make things better either, so better accept that the probability to have your Profile restored by restoring from backup ntuser.dat file or doing Windows System Restore or running whatever of Auto recovery and diagnostics tools in safe in most of the cases won't solve it. So face the reality and move on.

Create a New User Profile is the safest and most reliable fix.

1.1. Create a New Local Administrator Account

1. Open Settings
2. Go to Accounts → Family & other users
3. Click Add account
4. Choose I don’t have this person’s sign-in information
5. Select Add a user without a Microsoft account
6. Create a new username and password
7. After creation, click the account → Change account type
8. Set it to Administrator

Restart your PC and log into the new account.

1.2. Copy Data from the Old Profile

Open Win File Explorer

Go to:

C:\Users

Open your old corrupted profile folder (dir)

Copy important folders:

• Desktop
• Documents
• Downloads
• Pictures
• Favorites
• Music
• Videos

Do NOT copy (as this files contains actually the Data for the Profile itself they need to be automatically generated on new Profile creation time):

• NTUSER.DAT
• NTUSER.DAT.LOG
• NTUSER.INI

Paste the data into your new profile folder.

1.3. Delete the Corrupted Profile

Press Win + R

Inside prompt Type:

C:\Windows> sysdm.cpl

• Go to Advanced → User Profiles → Settings

Select the corrupted profile

• Click Delete

Then remove the old folder from C:\Users if it still exists.

2. Fix the Profile via Registry (Advanced approach)

 

2.1. Create Windows registry backup (Manual backup)

a) Backup Windows registry Using Registry Editor GUI tool (Manual Backup)

Open Registry Editor:

• Press Win + R, type regedit, and press Enter.
• If prompted by User Account Control (UAC), click Yes.

Backup the Entire Registry:

• In the Registry Editor, click File → Export.

In the Export Registry File dialog:

• Make sure Export range is set to All.

Name the file something descriptive like RegistryBackup_MMDDYY.

• Choose a location to save the backup (e.g., Desktop or external drive). Click Save.

This creates a .reg file containing a full backup of your registry.

Backup Specific Keys (Optional):

• Navigate to the key you want to backup.
• Right-click it and select Export.
• Save it as a .reg file for later restoration.

b) Create Windows registry Full backup with Command Prompt reg command

Open Command Prompt as administrator.

To backup the registry, use the reg command:

C:\Windows> reg export HKLM\Software C:\Backup\SoftwareBackup.reg

• Replace HKLM\Software with the key you want to backup.
• Replace C:\Backup\SoftwareBackup.reg with your desired file path.Press Enter to create the backup.

Run the Full Registry Backup Command

You’ll need to export the root keys individually, because reg export doesn’t allow exporting the entire registry in one command. Here’s the full set:

reg export HKCR C:\Backup\HKCR.reg /y
reg export HKCU C:\Backup\HKCU.reg /y
reg export HKLM C:\Backup\HKLM.reg /y
reg export HKU C:\Backup\HKU.reg /y
reg export HKCC C:\Backup\HKCC.reg /y

• HKCR → HKEY_CLASSES_ROOT
• HKCU → HKEY_CURRENT_USER
• HKLM → HKEY_LOCAL_MACHINE
• HKU → HKEY_USERS
• HKCC → HKEY_CURRENT_CONFIGC:\Backup\ → Folder where backups are saved (make sure the folder exists).
• /y → Automatically overwrite existing files if they

After running these commands, you’ll have a full backup of the registry in separate .reg files.

Restoring the registry Backup (if later needed)

To restore:

reg import C:\Backup\HKCR.reg
reg import C:\Backup\HKCU.reg
reg import C:\Backup\HKLM.reg
reg import C:\Backup\HKU.reg
reg import C:\Backup\HKCC.reg

2.1. Open Registry Editor

Press Win + R, type:

C:\Windows> regedit

Navigate to:

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

2.2. Look for Duplicate SID Entries

You may see two similar profile keys:

• One ending in .bak
• One without

If this happens:

1. Rename the normal one (add .old)
2. Remove .bak from the correct profile key
3. Make sure RefCount and State are set to 0

Restart your PC.

If this doesn’t work, use Method 1 instead.

2.3. Check Disk for Errors

Disk corruption can damage profiles.

Open Command Prompt as Administrator and run:

C:\Windows> chkdsk C: /f /r

You’ll be asked to schedule the scan on restart. Type Y and reboot.

2.4. Run System File Repair

Corrupted system files can also cause profile issues.

Run:

C:\Windows> sfc /scannow

Then:

C:\Windows> DISM /Online /Cleanup-Image /RestoreHealth

Restart after completion.

If multiple system errors occur, a full Windows repair installation may be necessary.

When to Consider an In-Place Repair

If profile recreation fails:

1. Download the latest Windows ISO
2. Mount it
3. Run setup.exe
4. Choose Keep personal files and apps

This repairs Windows without deleting data.

3. Restore (Copy) Application Data / Settings from Old Profile to New Profile

3.1. Copy Appdata Directory Application Settings

• AppData Directory contains application settings. It has three subfolders:

C:\Users\OldProfile\AppData\Local C:\Users\OldProfile\AppData\LocalLow C:\Users\OldProfile\AppData\Roaming

Safe practice: Only copy folders/files for specific applications (like Chrome, Outlook, VSCode, etc.):

Examples:

N! B! Avoid copying the entire Local or Roaming folder blindly—it may bring back the corruption.

• Roaming\Google\Chrome\User DataChrome:
• Roaming\Mozilla\Firefox\ProfilesFirefox:
• Roaming\Microsoft\Outlook or Local\Microsoft\OutlookOutlook:
• VSCode: Roaming\Code\User

Copy Settings and Files

1. Log into the new profile.

2. Copy documents, pictures, and other personal files to their new locations.

3. For AppData:

• Copy only specific app folders (like Chrome, Firefox, etc.).
• Always overwrite carefully, don’t replace the entire profile folders.

If moving registry settings, double-check each .reg file before importing.
 

! Note !

3.2. Some Apps might be necessery to Reinstall or Reconfigure

• Some apps store settings in the registry or protected locations; sometimes it’s safer to reinstall them in the new profile rather than copy files blindly.

Closing Summary

Recreating a corrupted Windows profile is usually faster and safer than trying to repair it.In most cases, creating a new administrator account and transferring your data solves the problem completely. In certain circumstances this might be a pain in the ass especially if you have a bitlocker enabled and for some reason you have forgotten or lost the Bitlocker encryption Key ! Beware not to ! 
If you have a company PC you should perhaps then contact your IT support team to provide you with the bitlocker data encryption key and with it hopefully you should be able to run Safe mode or recovery console. 

If the issue keeps returning once you have recreated the Profile, then use BIOS / UEFI to check your disk health and rest of PC hardware is reporting okay and then ensure Windows Updates are installing correctly.

That's it hopefully your new Profile should be fine. Next step of course is to restore your old profile settings to be on the new profile.