Guide to Fix Error Code 21 – Windows is removing this device

Are you receiving following error message in your windows operating system when booting your PC?

Windows is removing this device. (Code 21)

code21

This device manager error denotes that windows is in the process of removing the device and you need to wait until windows finished this task. Seems pretty easy but it is not such easy because this message gets stuck for an hour and after several reboots, you get the same problem.
 

Cause

When you uninstall the driver, update windows or install other third-party software, may damage some DLL file. This DLL file may be related to particular driver hence you are getting error code 21.
 

How to Fix Device Manager Error Code 21

Method 1: Fix using Advanced System Repair Tool

As we know, that most prominent reason behind “Code 21” is corrupted, damaged or outdated device driver, so you need an Advanced System Repair Tool that easily fixes problems related to Device Manager. It also repairs missing or corrupted system files like DLL files, EXE files, sys files, OCX files, inf files etc. Most of the time “Code 21” error appears due to corrupted registry entries. Advanced System Repair Tool takes care of registry file too and fix error easily.

Method 2: Fix Corrupted Driver Problems

As you know that the core reason behind Windows is removing this device. (Code 21) is corrupted or damaged device driver. So, Uninstalling and Reinstalling Device Driver may fix your issue permanently. Just uninstall the driver from Device Manager and install the latest version of the compatible driver.

1. Click on start menu and search for device. Now open Device Manager from search result.

search_device

2. Select Problematic Device > Right click on them and then select Properties.

driver-property

3. Go to the Driver tab and then click on Uninstall button to uninstall the driver.

uninstalling_driver

4. Reboot your PC.
5. Open Device Manager again and Go to Action > Scan for hardware changes.

scanhardware

Follow on-screen instruction and fix Device manager Windows is removing this device. (Code 21).

Method 3: Run Hardware and Devices Troubleshooter

Hardware Troubleshooter is an effective and easy way to fix any device related issues. Not only Windows is removing this device. (Code 21) but if you are getting some other error message that is associated with Device Manager, then running Hardware Troubleshooter may give you quick fix of this error.

1. Click on Start Menu and search for troubleshoot. Click on Troubleshooting from the search item.

troubleshoot

2. Click View All link in the left panel. It will open all the troubleshooting menu.

troubleshoot_viewall

3. Find Hardware and Devices in the list and click on it. It will start Hardware and Devices Troubleshooting.

hardware_troubleshoot

4. Click Next to start the process.

hardware_troubleshoot_1

Method 4: Update Driver Manually

Above error is associated with driver software, so it is the best idea to update the driver manually.

1. Click on Start Menu and search for the device. Click on Device Manager from the search result. It will open Device Manager Windows.

search_device

2. Search for the driver, which have the yellow exclamation mark and right click on them and select Update Driver Software. You must be connected to the internet before updating driver software.

unknown-usb-device-update-driver-software

3. Select, “Search automatically for updated driver software”. It will search the internet for the latest driver software.

search-automatically-for-updated-driver-software

4. If you have already a local file of driver software then select “Browse my computer for driver software” and browse a local copy of drivers.

device_manager_brows_local

Method 5: Increase System Memory

You must analyze system memory to fix this problem. If your system is running out low memory issue then the mighty choice is installing additional RAM in your PC.

1. Press Ctrl + Shift + Esc to open Task Manager. Click on More Details.

task-manager

2. Go to Performance Tab and analyze how much System memory is available for use.

system_memory

Method 6: Modify Registry File

Modifying registry file is not recommended because incorrect edit of registry file may harm your operating system badly. For added security, you must keep a backup of registry file before performing any operation on it.

1. Open Run command by pressing Windows Key + R and type regedit.exe

regedit

2. Browse for following entries and delete UpperFilters and LowerFilters.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{36FC9E60-C465-11CF-8056-444553540000}
 
Delete-UpperFilters-and-LowerFilters-key

3. Reboot your PC.
Recommendation: It is better to repair registry file using professional Advanced Repair Tool. It will automatically edit the required value and delete problematic values from registry file.

Summary

In order to Fix Error Code 21 – Windows is removing this device from Windows 7, Windows 8, Windows 10 and Windows Vista, you need to apply some special techniques that are explained well in this article.

Leave a Reply

Your email address will not be published. Required fields are marked *