Windows 10 suddenly Write Protecting USB Drives

I've been running Windows 10 since its public launch and not had a problem until now. Suddenly it's started write protecting USB drives when I plug them in. It started yesterday when I plugged a drive in and Windows detected a problem with the drive and instructed me to scan and repair, which I did. I can view the content but not write or delete. I tried the drive in another machine using Windows 7 and it said that the drive malfunctioned. I put this down to a faulty drive although it has never failed me before.

Today, I plugged a different USB flash drive into the laptop and was again informed that the drive needed scanning and repairing. The repair was successful and I began copying files but after a minute or two the copy failed and a notification popped up that the drive was write protected. Again, I can view and access the files and can copy from the drive but cannot write to or edit. As it happens, the data on these two drives are unimportant, but I now fear connecting my media centre drive or work memory stick as the data on those drives are much more important.

The only thing I can think of is that something on a system update at the weekend has caused this problem because I've used USB flash drives on this new laptop under Windows 8 and Window 10 with no problem before.

I hope someone can shed some light on this matter.

*UPDATE*

I've just tried another, old Kingston Data Traveler USB drive knowing that it's good quality and never let me down, and also knowing that the data on it is not important. I plugged it in and had the same message stating that there was something wrong with the drive and instructing me to repair. I ignored the message and the drive window opened, I have deleted folders and am currently writing £Gb of data to it with no problem.

So, the problem appears to be Windows 10 determining that there are non-existent problems on the flash drive and the repair process locking them.

Now all I need to do is to try and reverse the write protection on these two drives. I've tried the cmd and regedit methods with no success.

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Hi,

 

Thank you for contacting Microsoft Community.

You can remove write protection from your usb flash drive using the below method:

a. Open start menu, in the search bar type regedit and press enter. This will open the registry editor.

b. Navigate to the following path:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies

Note: If the registry key StorageDevicePolicies does not exist, you will need to create it manually.

c. Double click the key WriteProtect in the right window and set the value to 0 in the Value

Data Box and press OK button

d. Restart your computer and try copying files into your USB drives.

Registry Disclaimer: Sometimes this problem is caused by two Windows registry entries that have become corrupted. To fix the problem, you have to use Registry Editor to delete the corrupted registry entries.

However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs.

Hope this information was helpful and do let us know if you need further assistance. We will be glad to assist.

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Hi,

Thanks for your assistance. I have tried that and it doesn't work.

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This problem is seen in my windows 10 as well.

The registry edit option doesnt work as there nothing wrong there.

Both the USB ports and the Card reader slots are now dead for writing.

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I had the same problem. I could not delete anything and neither format the flash drive. It said it is write protected.

I finally got it working by doing the following.

As soon as i insert my flash drive i receive this notification asking to Scan and repair the drive. Simply ignore this message. and click cancel.

Then the flash drive started working perfectly fine.

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Even deleting the WriteProtec windows put back with value 1.

How can we fix that?

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I was having the same problem and the wording on one of the above entries caused me to try a different usp port.  The device worked fine, I moved it back to the port I was trying and it worked fine there too!

gl

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I have done what you did and for me didn't work... so after spending some time analyzing the problem I found a work around that worked pretty good.

1 - Open Regedit

2 - go to the key StorageDevicePolicies and right click, select permissions

3 - take out all the permissions by set "Deny" to:

ALL APPLICATION PACKAGES

SYSTEM

4 - Then when I change the value to 0 it won't be change to 1 again.

I tested the already plugged in USB Flash Memory and I was able to have full access.

Hope this tip help others with the same problem.

Placido

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Hi,

Thanks for your assistance. I have tried that and it doesn't work.

Same with my Wini7 system. It doesn't have the key in register StorageDevicePolicies

RealPommy, South Africa

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Storage device policies is not in the list so that is useless info

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I had the same problem. I could not delete anything and neither format the flash drive. It said it is write protected.

I finally got it working by doing the following.

As soon as i insert my flash drive i receive this notification asking to Scan and repair the drive. Simply ignore this message. and click cancel.

Then the flash drive started working perfectly fine.

I had the same problem and put into another USB port ignored the STUPID windows 10 message that there was a problem and scan and repair - and yes it works perfectly. What is wrong with windows 10 that it decides to do stupid things that mess up your work? One wonders if Microsoft employ idiots that think this would be fun lets try to mess everyones day up. GRRRR

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Last updated October 25, 2020 Views 52,129 Applies to: