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Fix “The disk is write protected” Errors on Removable Disk in Windows 10

Fix “The disk is write protected” Errors on Removable Disk in Windows 10

By Mitch Bartlett 12 Comments

In Microsoft Windows 10, you may receive an error that says “The disk is write protected. Remove the write-protection or use another disk” when attempting to copy a file to a USB removable flash drive.

This message may appear for several reasons.

Reason 1 – Read Only Switch

The drive may have a physical switch on it somewhere that sets it to “Read Only”, and makes the drive not writable. Look on the drive and see if there is a switch to toggle this setting to allow writing of files.


Reason 2 – Disk is Full

Right-click on the disk, then choose “Properties” and ensure there is plenty of free space available on the drive.


Reason 3 – Overwriting a “Read Only” File

If you are copying and replacing a file on the drive, and the file that exists on the drive is set to “Read Only”, you will receive an error message. Navigate to the file on the removable disk, right-click the file, then select “Properties“. Ensure the “Read-only” check box is deselected.


Reason 4 – Security Setting

If you are receiving “The disk is write protected…” errors on a computer that is owned by your company or a computer that is used by the public, the administrator of the machine may have set a security setting on the computer to prevent the ability to write files to a removable disk. You may want to talk to the administrator of the machine to gain proper access.

In some cases, you may be able to remove the setting using these steps.

  1. Hold the Windows Key while pressing “R” to bring up the “Run” dialog box.
  2. Type “regedit“, then press “Enter“.
  3. The Registry Editor opens. Navigate to the following location:
    • HKEY_LOCAL_MACHINE
    • System
    • CurrentControlSet
    • Control
    • StorageDevicePolicies
  4. Look for a value named “WriteProtect“. If it exists, delete it. If it does not exist, follow the same steps as above, but replace “HKEY_LOCAL_MACHINE” with “HKEY_CURRENT_USER“.

If the “WriteProtect” value does not exist in either location, this security setting may not be your issue.


Reason 5 – Drive is Corrupted

Your removable disk drive may be in a state where the file system is corrupted. You may need to format the drive to get it to work properly again. A format will erase all date off the drive. If you wish to format a disk, right-click the disk and select “Format…“. Certain manufacturers of removable drives may provide a utility to format the disk. Check with the manufacturer of your device to see if a utility exists.


Reason 6 – It’s Broken

If you have tried all the above options, it is likely the removable disk is broken. If the removable disk is old, it could have just reached it’s natural end of life. Many removable disks have a limit on the amount of reads and writes it can perform in it’s lifetime. Seek help from the manufacturer for more information.

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Filed Under: Windows Tagged With: Windows 10

Reader Interactions

Comments

  1. HIMOOYA GODWIN says

    February 6, 2020 at 3:22 am

    hey… please help me, my laptop using windows 10 whenever I insert USB flash disk it says your disk is write protect. please help me I have been trying many flashes which functions well on other computers

  2. Daniel Zewdu says

    February 6, 2020 at 12:04 am

    Thanks a bunch! The 4th one worked for me.

  3. Jay Srivatsan says

    January 18, 2020 at 11:27 pm

    OMG….THANK YOU!!!!!! I tried to sync my Ipod Classic in early January and got an error saying that the device was not recognized. Itunes told me to do a factory reset to try and fix the issue but after that my computer would keep giving me the “device is write protected…” message every time I tried to transfer music files back to Itunes. Apple told me that because the Ipod is no longer supported,. I have been working on fixing this problem for weeks. This worked and I can sync my Ipod again! Thanks a lot…..

  4. Jeff says

    November 5, 2019 at 8:23 pm

    Josh, I know this is older but for the next guy that googles… try here
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PolicyManager\default\Storage\RemovableDiskDenyWriteAccess

  5. David A. Stewart says

    September 5, 2019 at 6:13 pm

    Here is my Fix:
    Run Powershell as Administrator:
    $Reg = “HKCU:\Software\Policies\Microsoft\Windows\RemovableStorageDevices”
    Get-ChildItem -Path $Reg -Recurse | Get-ItemProperty | ?{$_.’Deny_Write’ -like ‘1’} | %{Set-Itemproperty -path $_.PSPath -Name ‘Deny_Write’ -value 0}

    Or Open Regedit to the same location and change all subkeys with a Name “Deny_Write” to 0
    And REBOOT

  6. user says

    January 14, 2019 at 10:51 am

    Have several USB drives; none of them work for Write on one windows10 machine in any of its 3 usb ports, however all work for read. But they all work fine for read and write on my 3 other computers.
    None of the solutions in this article work, nor any others I found on the web.
    Maybe I need update the drivers of USB ports, Windows says it is using best driver currently and no updated drivers on the manufacturer site. Can you comment on the best way to update the driver ? maybe delete it and reinstall, should I back up the old driver (how to do that)?

  7. Bárbara says

    December 28, 2018 at 7:09 am

    That worked! ohh I’m so happy! many thanks :) greetings from Brazil

  8. Manmohan says

    November 19, 2018 at 4:50 am

    Thanks a lot sir, it resolved my all 3 pen drive right protected error

  9. stizz says

    October 31, 2018 at 1:05 pm

    Thanks a lot eyy…l really thought my pc was broken or something but now it all works properly as it used to.

  10. Dav says

    October 15, 2018 at 5:29 am

    I use number 4, I deleted the writeprotected. But the same still remain, what can I do

  11. Todd says

    September 19, 2018 at 10:22 am

    Thank you!

    For some reason the value ‘Write Protect’ was set in my registry. No idea how or why. But all of a sudden I couldn’t write to any of my USB devices despite doing it just the previous day. So odd.

    Thank you again!

  12. Josh says

    August 16, 2018 at 10:42 am

    What if the registry location “StorageDevicePolicies” isn’t there? Only “Storage” and “Storage Management” and there is not Write Protect value to edit.

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