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Fix The Parameter is Incorrect Error in Windows 11

Recent Windows 11 users have reported that when they connect an external hard drive, pen drive or USB and try to access the device, a The Parameter Is Incorrect Error message pops up on the computer screen:

<DriverLetter>:\ is not accessible.

The parameter is incorrect.

The cause of The Parameter Is Incorrect Error may be:

  • Viral infection
  • file system corruption
  • Problem with USB drive

7 Solutions for The Parameter is Incorrect Error in Windows 11

If you also encountered The Parameter Is Incorrect Error, please read the following carefully. Next, we will introduce several methods to solve The Parameter Is Incorrect Error.

Fix 1: Make sure to use decimal notation in datetime settings

The Parameter Is Incorrect Error may appear if the datetime is formatted incorrectly, such as using a different decimal notation instead of a period (.).

1. Use Windows+R to open the Run dialog.

2. Enter the command intl.cpl and press Enter.

3. In the window that opens, click the Additional Settings button.

4. Ensure the decimal point symbol is ” . “. If not, change it to ” .”.

5. Finally, click the OK button.

Fix 2: Run a Chkdsk scan on the drive

1. Use Windows+R to open the Run dialog.

2. Type cmd while holding down Ctrl+Shift+Enter. This should open a command prompt window with administrator privileges.

3. In the User Access Control window that appears, click the Yes button.

4. In the command prompt window that opens, enter the following command:

chkdsk <External_Disk_Letter>:/f/x/r

For example, if your external disk reads E, the command above should be:

chkdsk E:/f/x/r

Fix 3: Run an SFC scan

1. Use the Windows+R keys to open the Run Terminal.

2. Type cmd and hold down Ctrl+Shift+Enter to open a command prompt in administrator mode.

3. In the User Access Control prompt that opens, click Yes.

4. Type the command and press Enter.

sfc/scannow/offbootdir=<External_Drive_Letter>: /offwindir=<Drive_Letter_Windows>:\windows

Note:

External_Drive_Letter – Represents the drive letter of the external disk.

Drive_Letter_Windows – The drive letter where Windows is installed.

For example, if your external drive has letter drive D and windows is installed in the C directory, the above command would be: sfc/scannow/offbootdir=D:/offwindir=C:\windows

5. You should see the options menu shown below.

6. In the terminal, type the command: SFC /scannow and press Enter.

7. Wait patiently for the scan to complete.

8. When finished, reboot the system.

Fix 4: Run a DISM scan

1. Use the Windows+R keys to open the Run dialog.

2. Type cmd and hold down Ctrl+Shift+Enter to open a command prompt in administrator mode.

3. In the User Access Control prompt that opens, click Yes.

4. In the Command Prompt window that opens, enter and execute the following command.

DISM.exe /Online /Cleanup-image /scanhealth

5. Note that this will take a few minutes to complete. Please wait.

6. After the scan is complete, restart the system.

Fix 5: Detect virus on the system

1. To open the Run dialog box, hold down the Windows+R keys simultaneously.

2. Enter the command ms-settings:windowsdefender and press OK.

3. In the Settings window, select Virus and threat protection, as shown in the image below.

4. Click Scan Options on the appearing window.

5. Select Full Scan and press the Scan Now button.

Fix 6: Reformatting the external hard drive

If none of the above methods solve the problem, then there is a problem with your USB drive. You can try formatting the disk. The downside, though, is that formatting an external HDD deletes everything on the drive.

1. Use the Windows+E keys to open Windows Explorer.

2. On the left, click This PC.

3. Now, right-click on your connected external device.

4. Select Format from the context menu.

5. In the format window that opens, click the Start button.

change refresh rate windows 11

Fix 7: Update disk drivers

1. Press and hold Windows+r to open the Run dialog

2. Enter devmgmt.msc and click OK

3. In the Device Manager window, double-click the disk drive.

4. Right-click the external disk that is causing the problem and select Update Driver.

5. In the window that appears, click Search for drivers automatically.

6. You will be notified of any newer driver versions found. Follow the on-screen instructions to update the disk driver.

7. Reboot the system to see the changes.

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