Get an error for changing the windows authentication mode to the both SQL and windows authentication mode

I installed the SQL server Express 2008 R2 and then SQL Server Management Studio 2008 R2 . But during the installation, I could not choose the both SQL and windows authentication mode and an error accrued so I did that just with windows authentication mode. 
Now, I want to change the windows authentication mode account to the SQL authentication mode but it shows me an error which is you do not have permission (Although I am the administrator in windows), what can I do?
Following steps are the steps that I went but I got an error:
Server properties >> security >> choose the option of SQL Server and Windows Authentication mode 
and the error that I got is attached(access is denied)  
Can you please help me?

You can change the setting after you gain admin rights to your SQL Server. You don't admin rights automatically, you have to explicitly add yourself during the install
Here's a guide on how to (re)gain those rights:
http://v-consult.be/2011/05/26/recover-sa-password-microsoft-sql-server-2008-r2/

Similar Messages

Maybe you are looking for

  • Hi ,Maximum line size in the report

    What is the maximum line size inthe report.Some are saying 1023.Some are saying 255 characters.I am full confusing this concept. And if the line size mentiones in less than the length of the data in the write statement ,what happened? Sometimes it is

  • Itunes Jumbling up Song Names and actual Files

    Hi, i've searched the forum google and everywhere and can't seem to find an answer. recently my Itunes has been going a bit mad. I've selected a song say: "Jamiroquai- Virtual Insanity" in the library but it will play a completly different song but k

  • Issue with font extensions being removed/stripped

    We recently upgraded to 10.8.2. Our font files are housed on a server and since the upgrade, most of our fonts are viewing as executable files and we are unable to activate/use them. I've tried changing the extensions, copying them from an older mach

  • Can't get Nano to shut off

    I have a version 1.3.1 nano. It is a bear to get it to turn off. It will never shut off, pressing the pause/hold at the bottom of circle, if some music selection is not playing ... but then, I have to try and tinker with the Lock switch, off and on .

  • Photos downloaded to iPad are blurred in 'slideshow'

    I've downloaded 50 images into an album on my iPad, but when I click on the 'slideshow' feature the first image is as sharp as it should be, but thereafter the remaining images are blurred can anyone tell me why this is please?  This ONLY happens whe