"Logon failed" error after update from 13.0.15 to 13.0.17

Hi there

We use Crystal Reports for visual studio 13.0.15 to generate Reports based on a mdb (Access 2000 file format) on Windows 10 with Visual Studio 2015. Everything works fine. But if we uninstall 13.0.15 and install 13.0.17, the Verify()-method fails with "Logon failed". There are no other changes, neither in code nor other components (database structure, windows-system, ...). The .net 3.5 feature is fully activated.

I cannot find any "breaking changes" in the documentation at http://scn.sap.com/docs/DOC-7824

Any ideas?

Thanks

markus

//edit

Version 13.0.16 works, no problems.