If you have users complaining about incomplete search results on RDS Server 2019, especially in Outlook, this registry key might fix the problem. It did fix mine.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Search
DWORD EnablePerUserCatalog 0
Restart the Windows Search service.
This will create the index database under C:\ProgramData\Microsoft\Search\Data\Applications\Windows rather than in the user’s AppData folder. It should look something like this:

I searched for nearly a week before I found this little bit of gold.
glad I could help ????
Thanks mate, this helped a lot, finally indexing works as it normally should. Have a nice day!
Thanks a lot, you should send this solution to Microsoft’s forum, impossible to find a solution with them !
Congrats 🙂
Thanks!
Thanks mate, it was really helpful to me, again, thanks
This was a huge help and took me way to long to find. Thank you!
thank you so much for the same. it was grate help for me.
Ajni, you saved my day – Thanks a lot…
Glad I could help!