13 hours ago, FrankZB said:
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I just find it odd that Microsoft would create a situation where a register entry would point to non-existent software.
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I believe that the particular entry discussed here is a new entry related to Cortana, as Hazelnut said above, also it's possibly related to the accessibility options for blind users.
So it's related to the built in Windows utilities.
Any/every Patch Tuesday, or other Windows 10 update, is liable to change the registry and add new entries.
(New entries that a registry cleaner will not recognise, because they are new).
At the moment Windows 10 updater is adding things in the background, and making changes in the registry, that will not be activated until the spring 2021 Feature Update in a month or two. (Windows 10 version 21H1)
https://www.bleepingcomputer.com/news/microsoft/windows-10-21h1-coming-soon-here-are-the-new-features/
So yes; you will have things on your machine, especially in the registry, that don't seem to be connected with anything - YET.
Registry cleaners will not recognise these new entries/changes, and may/will try to remove them.
Microsoft do this so that when the update/activation comes it's an "Enablement Package" that switches on these already downloaded things making it much quicker than having to download everything at that time.
If you remove them it just means that Windows will have to download them again.
Think of it like getting the paint in ready for redecorating, and putting the right paint in each room for when you start.
If you thrown that new paint out you'll just have to get it again when you come to do the actual painting.