This is not a Microsoft product and it might be a false-positive or incorrect report. Try contact their support and report this issue.
How Come My Registry Cleaner Always Says there are Missing MUI refference
Computer\HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\Shell\MuiCache C:\Windows\System32\appresolver.dll.FriendlyAppName
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Reza-Ameri 17,341 Reputation points Volunteer Moderator
2022-03-25T19:27:22.907+00:00 -
Limitless Technology 39,931 Reputation points
2022-03-29T20:35:47.843+00:00 Hi @John Duffy
Like many Antivirus and Antimalware programs, your reg cleaner probably does not report correctly to the MUI cache, this is done to make it harder for Malware to disable your protection and/or (as in this case) your protection's ability to update itself. It is common to see one or more entries report as missing MUI in regards to your antivirus solution.
You should exclude or ignore these references.
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