Win Server 2019 file server, cannot find PDF's if windows search indexer enabled.

Hello,

We have Windows Server 2019 Standard as file server (network share).

When turn on Windows Search indexing (it takes whole weekend to index) I cant find any PDF's when searching with pdf filename.

Even if I go with File Explorer to directory where this pdf is and do the search, it cannot find anything.

This doesn't happen with excel or word files.

If i take indexer off, every search takes really long time but it finds PDF's.

Today I did install Adobe PDF iFilter 9 for 64-bit platforms and also Adobe Acrobat Reader DC but i'll have to wait till friday to try again indexing.