PDF iFilter 64 11.0.01 support for SQL Server on Windows 7 or Windows 8

Hello,

we use PDF iFilter 64 [https://www.adobe.com/support/downloads/detail.jsp?ftpID=5542] for indexing PDF files to enable FullTextSearch on SQL Server. This works fine with different SQL Server versions (2008, 2012 and 2014) as long as we install this on a server OS like Windows 2008 or Windows2012.

But we have no luck, if we try the same on a client OS like Windows 7 or Windows 8. All mentioned operating systems are used in the 64bit edition.

As some threads mentioned problems with a too long installation path, we tried the default folder first and shortened it to C:\Adobe\iFilter11 on a 2nd approach, no success either.

When checking the 'fulltext document types' everything looks fine.

SELECT document_type, path from sys.fulltext_document_types where document_type = '.pdf'

results in

But when looking into the FTS-logs after creating the fulltext index all PDF documents in our table give a warning "No appropriate filter was found during full-text index population[...]"

...
2016-01-27 09:45:33.73 spid33s     Warning: No appropriate filter was found during full-text index population for table or indexed view '[fts_test].[dbo].[fts_testtable]' (table or indexed view ID '3335123456', database ID '6'), full-text key value '123'. Some columns of the row were not indexed.
2016-01-27 09:45:33.74 spid26s     Warning: No appropriate filter was found during full-text index population for table or indexed view '[fts_test].[dbo].[fts_testtable]' (table or indexed view ID '3335123456', database ID '6'), full-text key value '124'. Some columns of the row were not indexed.
...

According to this thread Re: PDF iFilter Support for Windows 8.1 and SQL Server 2014 changing the GUID of the persistent handler should help, but this gives no correction. On the contrary: when checking the fulltext document type (see above) the pdf extension is no longer found after changing the GUID.

Any hints will be appreciated.

tia

Fossi