Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Lost access to C: drive and admin features

09 Dec 2010   #21

Windows 7 Enterprise (x64); Windows Server 2008 R2 (x64)

Run in a evalated prompt the following command, to reset all permissions to default.
secedit /configure /cfg %windir%\inf\defltbase.inf /db defltbase.sdb /verbose

My System SpecsSystem Spec
09 Dec 2010   #22

Windows 7 Ult, Windows 8.1 Pro,

Have you tried going into the Security tab of the drive?

You can give everyone full access to the drive by adding "Everyone" where it shows in the picture below. Don't forget to hit "apply" and "ok".

Attached Thumbnails
Lost access to C: drive and admin features-sharing-entire-c-drive-authenticated-users.png  
My System SpecsSystem Spec
31 Jan 2016   #23

Win 10
Any solution yet?

Hey Kyrios,

I have made the same mistake as you did but in Win 10. I got the same behavior as you did in Win 7. Nothing work to reestablish my privileges. Did you find any solution to restore your data? Thanks for any info!
My System SpecsSystem Spec

01 Feb 2016   #24

Windows 10, Windows 8.1 Pro, Windows 7 Professional, OS X El Capitan

Hi Gfdan,

Do you have access to an administrative account and are able to perform administrative actions? If not, you have truly made the same mistake as Kyrios, and it'll be a long recovery mission for you.
My System SpecsSystem Spec

 Lost access to C: drive and admin features

Thread Tools

Similar help and support threads
Thread Forum
lost access to drive
I asked this over on tenforums since I'm running Windows 10 but I've gotten no response So I was hoping someone here could help. I'm having a serious issue here with my external USB 3.0 HDD enclosures. They used to work fine with Windows 7. Now with Windows 10 I fought all last week trying...
Hardware & Devices
All MS Office Pro features work with Admin but not with admin user
For a long time I've had much difficulty understanding the exact difference between the computer administrator and a user whose type is administrator. On my system there are two administrators - one known as "Administrator" and another with my name, Gary or Gary and Susan. Each administrator has...
Microsoft Office
Primary drive got giving full access to my account, which is set admin
I have been having several problems, but I believe they all have one root cause: Windows will not grant me full permissions on my main HDD (C). Problems I notice: 1) See attachment 2) Steam makes me use my username/password every time even if I check 'Log Me In Automatically' 3) Desktop...
General Discussion
Lost of Drive C Permissions and admin features
:huh:I was on the permissions for drive C, because I didn't want standard user changing setting on there and when I clicked OK windows came up with an error and then when I tried to go back on to the permission change window it said " access denied" and I Now can't Change it back, I Can't do...
General Discussion
cant access root drive - lost admin rights
Hi; I installed Windows7 recently. I was changing permissions and accidently denied authenticated users to C drive. I was logged in as admin which is the only account. Now I cant access anythig in C Drive and cant execute any thing. I tried through safe mode as well but of no use. How can I...
System Security

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 17:45.
Twitter Facebook Google+