Hello Zi Feng, already followed that article, with no results at all.
The problem happens with srchadm.msc from MSSearch folder, the 'Search' Snap-In. It is not connecting with the Exchange Full-Text Index which is already working, so I can't add PDF content to it as recommended on the IFilters from Foxit and Adobe.
The index name is correct, event log is fine, just the connection won't happen with that error:
""Unable to connect to host <servername>. the application called an interface that was marshalled
for a different thread"
Thank you!