Solved Lost ownership of C: Access denied

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rollanders

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I have used W8 since over 1 month with no problems. Suddenly I have lost ownership of c:. In my user account I am still Administrator. I can still use the computer but am very limited. When I try to open the taskmanager I get the error "Windows cannot access C:\windows\system32\taskmgr.exe".
In safe mode I look for permissions for local disk c: It says that "No groups or users have permission to access this object."
How can I regain ownership of c:?
 

My Computer

System One

  • OS
    windows 8
rollanders said:
I have used W8 since over 1 month with no problems. Suddenly I have lost ownership of c:. In my user account I am still Administrator. I can still use the computer but am very limited. When I try to open the taskmanager I get the error "Windows cannot access C:\windows\system32\taskmgr.exe".
In safe mode I look for permissions for local disk c: It says that "No groups or users have permission to access this object."
How can I regain ownership of c:?
Click to expand...

Maybe right click/Take Ownership ?

Untitled.jpg

Untitled.jpg
 

My Computer

System One

  • OS
    Windows 8.1.1 Pro with Media Center
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Gateway
    CPU
    AMD K140 Cores 2 Threads 2 Name AMD K140 Package Socket FT1 BGA Technology 40nm
    Motherboard
    Manufacturer Gateway Model SX2110G (P0)
    Memory
    Type DDR3 Size 8192 MBytes DRAM Frequency 532.3 MHz
    Graphics Card(s)
    ATI AMD Radeon HD 7310 Graphics
    Sound Card
    AMD High Definition Audio Device Realtek High Definition Audio USB Audio Device
    Monitor(s) Displays
    Name 1950W on AMD Radeon HD 7310 Graphics Current Resolution 1366x768 pixels Work Resolution 1366x76
    Screen Resolution
    Current Resolution 1366x768 pixels Work Resolution 1366x768 pixels
    Hard Drives
    AMD K140
    Cores 2
    Threads 2
    Name AMD K140
    Package Socket FT1 BGA
    Technology 40nm
    Specification AMD E1-1200 APU with Radeon HD Graphics
    Family F
    Extended Family 14
    Model 2
    Extended Model 2
    Stepping 0
    Revision ON-C0
    Instruction
    Browser
    Opera 24.0
    Antivirus
    Avast Internet Security
Unfortunately that alternative is not present when I rightclick. And when I left-click I get the error "C:\ is not accessible. Access denied." If I rightclick and choose "Properties" I get the message "You must have read permissions to view the properties of this object". If I choose Advanced I get "Unable to display current owner".
 

My Computer

System One

  • OS
    windows 8
DO NOT, i repeat, DO NOT take ownership of the c: drive as advised above.

Best thing to do, is try to create a new admin user and login to that and see what happens.

If that doesn't work, the best thing you can do, is back up your data and reload/reset Windows.

Reason...

Taking Ownership of the C Drive will cause you a ton of problems. It will break windows. Never do it.
Especially with the TakeOwnership Hack.

Besides not having access to C: drive, there are more tan likely a whole bunch of other stuff that is messed up as well.
The only way to correct this is to try a restore, reset or reinstall of Windows to correct all the permissions that have been broken.
 

My Computer

System One

  • OS
    Win 8.1 Pro
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Self Built
    CPU
    I7-3770K
    Motherboard
    ASUS SABERTOOTH Z77
    Memory
    CORSAIR 8GB 2X4 D3 1866
    Graphics Card(s)
    EVGA GTX680 4GB
    Monitor(s) Displays
    ASUS 24" LED VG248QE
    Hard Drives
    SAMSUNG E 256GB SSD 840 PRO -
    SAMSUNG E 120GB SSD840 -
    SEAGATE 1TB PIPELINE
    PSU
    CORSAIR GS800
    Case
    CORSAIR 600T
    Cooling
    CORSAIR HYDRO H100I LIQUID COOLER
    Keyboard
    THERMALTA CHALLENGER ULT GAME-KYBRD
    Mouse
    RAZER DEATHADDER GAME MS BLK-ED
    Antivirus
    Windows Defender
    Other Info
    APC 1000VA -
    LGELECOEM LG 14X SATA BD BURNER -
    CORSAIR SP120 Fans x 3 -
    NZXT 5.25 USB3 BAY CARD READER -
    HAUPPAUGE COLOSSUS
I do not have the rights to create a new user- although I am Administrator. I tried to refresh but got an error It looks like something didn't load correctly...... Error code: 80070490
I found some references for this code for Vista and W7 but not W8. I think I have to give it up and reinstall.
 

My Computer

System One

  • OS
    windows 8
I finally solved the problem. I have dual boot windows 7. In w7 the partition was also unaccessible, but I could change and add new users. Sop I added myself and all corresponding users from W7 c:-drive. After rebooting I was back in business. I do not understand what happended. May the dual-boot have created it?
 

My Computer

System One

  • OS
    windows 8
Tepid said:
DO NOT, i repeat, DO NOT take ownership of the c: drive as advised above.

Best thing to do, is try to create a new admin user and login to that and see what happens.

If that doesn't work, the best thing you can do, is back up your data and reload/reset Windows.

Reason...

Taking Ownership of the C Drive will cause you a ton of problems. It will break windows. Never do it.
Especially with the TakeOwnership Hack.

Besides not having access to C: drive, there are more tan likely a whole bunch of other stuff that is messed up as well.
The only way to correct this is to try a restore, reset or reinstall of Windows to correct all the permissions that have been broken.
Click to expand...


Before I took ownership of C:\ , I made factory default backup on thumb drive.
I have a factory default backup drive on the computer.
I made a Restore Point.
I can download a copy of Win 8 Pro & re-install it using my present product code.

Since taking ownership of C:\, I have experienced no problems what-so-ever.
I did not "advise", I put the idea out for consideration.

It is not a "Hack".It is a legitimate option provided by Microsoft. :geek:

This page "might" be of use.I'm just putting the idea out there for consideration. :)
Microsoft Support
 

My Computer

System One

  • OS
    Windows 8.1.1 Pro with Media Center
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Gateway
    CPU
    AMD K140 Cores 2 Threads 2 Name AMD K140 Package Socket FT1 BGA Technology 40nm
    Motherboard
    Manufacturer Gateway Model SX2110G (P0)
    Memory
    Type DDR3 Size 8192 MBytes DRAM Frequency 532.3 MHz
    Graphics Card(s)
    ATI AMD Radeon HD 7310 Graphics
    Sound Card
    AMD High Definition Audio Device Realtek High Definition Audio USB Audio Device
    Monitor(s) Displays
    Name 1950W on AMD Radeon HD 7310 Graphics Current Resolution 1366x768 pixels Work Resolution 1366x76
    Screen Resolution
    Current Resolution 1366x768 pixels Work Resolution 1366x768 pixels
    Hard Drives
    AMD K140
    Cores 2
    Threads 2
    Name AMD K140
    Package Socket FT1 BGA
    Technology 40nm
    Specification AMD E1-1200 APU with Radeon HD Graphics
    Family F
    Extended Family 14
    Model 2
    Extended Model 2
    Stepping 0
    Revision ON-C0
    Instruction
    Browser
    Opera 24.0
    Antivirus
    Avast Internet Security
Yes, it is a legitimate option, I am aware of that. I call it a hack cause it's not a mainstream thing and not everyone should use it.

Taking complete Ownership of the C drive WILL cause problems in the long run.
 

My Computer

System One

  • OS
    Win 8.1 Pro
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Self Built
    CPU
    I7-3770K
    Motherboard
    ASUS SABERTOOTH Z77
    Memory
    CORSAIR 8GB 2X4 D3 1866
    Graphics Card(s)
    EVGA GTX680 4GB
    Monitor(s) Displays
    ASUS 24" LED VG248QE
    Hard Drives
    SAMSUNG E 256GB SSD 840 PRO -
    SAMSUNG E 120GB SSD840 -
    SEAGATE 1TB PIPELINE
    PSU
    CORSAIR GS800
    Case
    CORSAIR 600T
    Cooling
    CORSAIR HYDRO H100I LIQUID COOLER
    Keyboard
    THERMALTA CHALLENGER ULT GAME-KYBRD
    Mouse
    RAZER DEATHADDER GAME MS BLK-ED
    Antivirus
    Windows Defender
    Other Info
    APC 1000VA -
    LGELECOEM LG 14X SATA BD BURNER -
    CORSAIR SP120 Fans x 3 -
    NZXT 5.25 USB3 BAY CARD READER -
    HAUPPAUGE COLOSSUS
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