But the main question surfaces What are Upperfilters and Lowerfilters registry in Windows?
Here is your answer.
Upperfilters and lowerfilters are basically the add-ons incorporated by the third-party programs while downloading and installing in your system.
Unfortunately, sometimes these filters can really create a lot of device manager errors. On such occasions, deleting the upper filters and lower filters registry values is the only viable solution in windows to fix the errors.
When to Know you Need to Delete Upperfilter and Lowerfilters in the Registry Editor?
When you come across device manager errors such as “This Device Cannot Start (Code10)”, It is an indication that you now need to remove the upper filters and lower filters registry values for the good. If the filters are not deleted sooner, They can remain as leftovers even after the programs are uninstalled from your system. They continue to corrupt Many indispensable software and services in the background.
In this tutorial, we will show you a quick step-by-step tutorial on how to remove the upper filters and lower filters registry values from windows 10.
NOTE: The method explained below is valid for all Windows Operating systems, namely 7,8,10,11.
TIP: Deleting and changing Registry info seems quite simple and straightforward, but even a small mistake in your effort can hamper your entire system on various levels. So if you are not comfortable with it, refrain from doing it, or first learn how to change, add, and delete registry data in the Windows Registry Editor
# METHOD DESCRIPTION
Step 1. Press the “Windows + R” keys together to open the Run Windows at the bottom left corner of the screen.
Step 2. Enter “regedit” and hit “Enter”. The Registry Editor Windows will open up before you.
NOTE: You can also your command prompt to open Registry Editor.
Step 3. On the left side of the panel, look for the HKEY_LOCAL_MACHINE hive. Click on it to expand the option.
Step 4. Now continue to click on SYSTEM> CURRENTCONTROLSET>CONTROL>CLASS.
Step 5. Once the Class option is expanded. You will get to see a long list of subkeys. Click on the option that looks like this one :
Step 6. Now comes the real deal. You have to look and figure out the Class GUID for the hardware device that you are seeing the device manager error code for. For instance, you are shown the Code 39 error in Device Manager. Now as per the list above, it is the GUID for the CD/DVD devices:
The moment you know exactly the GUID, click on it and move on to the next step.
NOTE: Sometimes it is difficult to determine the exact GUID for your error. The only suggestion that might work for you is that the difference lies usually in the first set of numbers or letters and not the last.
Step 7. Choose the registry subkey that you have just figured out to match the device class’s GUID.
Step 8. Now, look at the Upperfilter and Lowerfilters values on the right side of the Windows.
TIP: In case none of the values appear on the right side list, check for the correct device class. You must have mistakenly chosen the right one. You can also try some other methods to fix the errors.
Step 9. Now right-click on the Upperfilter value, click “Delete” and select “Yes” to the notification “Deleting certain registry values could cause system instability. Are you sure you want to permanently delete this value?” to confirm your choice. Repeat the same for the Lowerfilter value also.
Step 10. Double-check that the Upperfilter and Lowerfilter options are not shown in the list anymore. So exit the Registry Editor and restart your computer to it a fresh start.
Step 11. Finally, check if removing the registry keys has really sorted out your problem or not.
In certain cases, you may need to reinstall the software created to use the device you have deleted the Upperfilter and Lowerfilter values for. So, check if it really works for you or not.
If none of these suggestions works in your favor, consult an expert right away since unnecessary tampering with your registry keys persistently may worsen the situation further than really solving it.