Use Indexer Diagnostics App for Windows Search Issues in Windows 10  

@Brink - shouldn't just be the link though- needs to be pointed out this seems to be exclusively available to some in the US (the OP in the thread is in the US and couldn't get the app) or via a US-based VPN.

I used an account where this app wasn't installed, and using Proton VPN, was able to download it via the link and the button on that page. Thanks.

Still available tome here in Slovenia, but I have it installed since.. well long time ago.

My primary language is set to English (US). Maybe this is the issue.

The base language of my O/S is US, but with UK language packs.

dalchina said:

The base language of my O/S is US, but with UK language packs.

Then, it's not the language settings. Most probably. Have to find a system without Indexer installed...

Simply creating a new account works...apps are on a per account basis.

dalchina said:

Simply creating a new account works...apps are on a per account basis.

Done... Indexer diagnostic found (via the link in first post) and installed

When you said you have English US as a base language.. which one is listed first in language settings?

Good..

Very similar, only system locale is different

Try using a VPN and a proxy server in the US - even though you're in the US. Exactly as I did as above.

Also, what's the base language of your O/S? (See above for how).