No Mapping Between Account Names and Security ID’s Was Done – Solution
This is one common error you will encounter after you start using Windows 7, perhaps. That’s because you would want to customize setting around as soon as you get Windows 7 up and running. Recently I downloaded an mp3 song and when I tried to play it using Windows 7 Media Player, I encountered this error. VLC media player was however playing that mp3 file.
When you will get your hands on your PC/Laptop loaded with Windows 7, you will notice that PC user name is not what you want to enjoy. You would obviously want to change it to your name, your spouse name or your baby name or whatever, and here comes the first error.
Control Panel > User Accounts > Change your Account Name
Following above way to change account name will change the ‘account name’ but not that ‘user name’ which came along with Windows 7 installation. In my case my PC user name was ‘owner’ and I changed its name to techmynd. So far so good.
I wanted to go further and did this:
Right click ‘Computer’ icon at desktop > Manage > Local Users and Groups > Users
There it was again. ‘Owner’ with full name as ‘techmynd’. I renamed that owner to techmynd as well.
Downloaded songs refused to play in Windows 7 Media Player.
Computer experiences this problem if one or more of the following conditions are true:
- A SAM account name was renamed on the client computers.
- An account does not exist on domain member computers.
- A SAM account name differs from its domain account name.
- The client is running a Multilingual User Interface Pack (MUI) that uses a different default language than the domain controller.
Don’t rename username. Only change its name by going to Control Panel > User Accounts. If you did it, revert the back. I renamed it back to owner in manage > Local Users and Groups > Users and the problem was solved.
Create another desired user (with administrator rights), log off, login using new administrator and delete the unwanted user from User Accounts.
Hiroshi is a senior web developer, entrepreneur, founder and CEO of TechMynd. You can subscribe to TechMynd's newsletter to receive free software, giveaways, technology news and updates in email. Become our fan on Facebook, follow us on Twitter. Got any question? Contact us or visit us on our Google Profile.