We will also introduce some effective solutions that are worth trying to remove this error.
When this error occurs, the following Error Deleting Key window will pop up.
This error can happen on Windows 11, Windows 10, Windows 8, and Windows 7.

How to delete undeletable registry keys?
In this article, we will discuss why this error occurs and how to fix it using different methods.
Why Does Error While Deleting Key Occur?

If you dont have the necessary permissions, youll get an error alert when trying to delete a key.
This can happen if a process or utility is accessing the key or one of its subkeys.
Corrupted Registry
Sometimes, the warning pop-up can appear due to a corrupted registry.
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How to Fix the Error While Deleting Key?
To start your rig, punch the Start button and choose the Restart option.
Step 1: hit the search icon from the taskbar, then search forregistry editor.

Step 4: Try the delete that key again.
If this method doesnt work for you, you’re free to try the next solution.
Do you know how to run CMD as administrator on Windows 10?
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Now, you could read this post which introduces three simple methods to do this work.
Sometimes, the oops message can appear because you dont have ownership of the key.
Step 2: tap on theAdvancedbutton.
Step 3: ClickChangenext to Owner.
Step 4: input your username underEnter the object name to select.
Step 5: Click theCheck Namesbutton.
Step 6: ClickOKto save the change.
Step 8: When you go back to thePermissionpage, you better click your username underGroup or user names.
Then, checkAllowfor theFull ControlunderPermissions for ALL software PACKAGES.
Step 9: ClickApplyandOKto save the change.
Windows 10 does not allow users to set their registered owner and organization information by themselves any more.
This post shows you how to change.
Step 1:Download PSExecfrom Microsoft and install it on your PC.
Step 2: Search forcmdusing Windows Search, then selectRun as administratorfrom the right panel.
Step 4: venture to delete that key again.
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