Windows 10: ntuser.dat

Greetings
Why do I have so many ntuser.dat files?
I counted 20 with various extensions: blf, regtrans-ms, pol, log1, log2, ini
I'm in windows 10 pro ver.1709 build 16299.248
thank you

:)

 

ntuser.dat

I opened a bogus email from Amazon that had a tab for purchase details which I tried to access.

Did I allow someone to have access o my computer?

I noticed a ntuser.dat file created the same day as the email with 8,704 KB. Should I delete this?

***Post moved by moderator to the appropriate forum category.***

 

ntuser.dat

Hello,

The ntuser.dat is a type of registry file that contains the registry setting of your account. We don't have to delete it as it might affect the user preference settings and may corrupt your user profile.

We suggest that you run the pre-installed Windows Defender on your device to protect your device from viruses or threats. You visit this
link for more information about Windows Defender.

Regards.

 

You most likely already know that ntuser.dat is your user profile, loaded at sign in as the HKEY_CURRENT_USER registry hive. You also understand that this is constantly being updated to reflect the changes that happen as you use the PC.

There transactions are not written to ntuser.dat as they happen, that usually occurs as you sign out or shut down. Instead they are written to the regtrans-ms files (short for registry transactions). Together all these types of files help prevent the registry becoming corrupt, the changes only being committed in a controlled manner at sign out. An 'uncontrolled' shutdown like a BSOD would leave ntuser.dat unmodified, so at next sign in it should be free of any changes that happened in the previous abruptly terminated session.

Best leave them alone then *Smile

 

I didn't know what is the purpose of ntuser.dat files.
thank you for clarifying.
I won't touch them following your advice.
many many thanks

 

You're welcome, glad to have helped clarify what's going on.