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Friday, September 11, 2009

Pen drive blocked-disabled at office or college computer - Unblock it

We have observed this problem at may places that you need some data on your pen drive but the USB drive or pen drive does not work. Windows gives a notification

New mass storage driver

“Found new hardware, USB Mass Storage Device, please install drivers for it.”

Windows will now show a New Hardware Wizard to install the drivers. Lets see in details how we can fix this problem.


There are more than one ways in which the USB drives are disabled by Administrators at offices or colleges or schools. These methods are:

1. By Disabling USB Ports from Device Manager.

2. By Tweaking Registry values for USB Mass Storage Devices.

3. By Un-installing the USB Mass Storage Drivers.

We will see how to fix all these situations one by one. But before you begin, you must have administrator rights on that computer to fix the issue.

i) Go to Start > Run, in run prompt type “devmgmt.msc” and press enter. This will open device manager.

ii) Go to Universal Serial bus Controller. See if there are any red colored cross? If yes, right click and enable those USB Ports.

Enable USB at Device manager

Now try and use the pen drive. If it works fine, then great, else read the next two steps also.

Correct Registry Value for USB Mass Storage device

i) Go to Start > Run , type “regedit” and press enter, this will open registry editor.

ii) Navigate to the key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR

registry chane to make USB mass storage work

iii) Double-click on the “Start” key to modify its value, change the value to 3 and press OK.

Source : http://www.troublefixers.com/pen-drive-locked-at-office-or-college-computer-unlock-it/

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