You can disable the Insert key using the Registry Editor. Here’s how:
On your keyboard, press the Windows key.
Type “registry editor” (no quotes).
Press Enter and the Registry Editor window will pop up.
On the left side of the Registry Editor window, find the “HKEY_LOCAL_MACHINE” folder and double-click it.
Find the SYSTEM folder and double-click it.
Open the CurrentControlSet folder.
Find the Control folder and double-click it.
Open the Keyboard Layout folder.
Once you are inside the folder, right-click the right section of the window and select ‘New” -> “Binary Value” and type any name you like, say “Insert_Disable”.
Double-click the ‘Insert_Disable file.
In the Value data window, paste the following text:
00 00 00 00 00 00 00 00 02 00 00 00 00 00 52 E0 00 00 00 00
Press the OK button.
You can now exit the Registry Editor and restart your computer
After you have restarted your computer, the Insert key will be disabled.
(Original info taken from: https://www.auslogics.com/en/articles/disable-insert-key-in-all-applications/)
Tip: A quicker way to navigate to the correct folder is to type the following (minus the red bit) into the address bar:
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout\Insert_Disable
