To know more on installation guide, please check Install and Configure SQL Server 2008 Express by CondorMan.
I've followed the steps and got error message "'' is not a valid login or you do not have permission." and print screen as below.
I have no idea why is this. I've tried few suggestion stated in some of the forum:
- I've tried to change my user name and try to install.
- Create a new user "sa" with strong password. Login to window using this account and do installation.
Finally, i try to rename my machine/computer name and try to install and the installation completed successfully.
This may be a bug from microsoft but i'm not sure.
My scenario: computer name = my user account
My Solution: change computer name to != user account then do installation.
p/s: Change user account won't help.
Hope this can help you. Share your solution if you have different one.