Thanks a lot! For me (beholder 407 analog, beholdtv 5.05, server 2008 standard x64) all that was needed: Windows Registry Editor Version 5.00 [HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{71F96460-78F3-11d0-A18C-00A0C9118956}] @="%Filter_XBar%" [HKEY_CLASSES_ROOT\Wow6432Node\CLSID\{71F96460-78F3-11d0-A18C-00A0C9118956}\InprocServer32] @="C:\\Windows\\SysWOW64\\ksxbar.ax" "ThreadingModel"="Both"