Classic Client 6.3.12 For 64 Bits New! Site

: A 64-bit web browser or a 64-bit native enterprise application cannot load a 32-bit dynamic-link library (DLL). If your browser requires the Classic Client to read a physical smart card for login, the architectures must match perfectly.

Furthermore, if you were using the 64-bit version of a browser like Firefox, the location of the core library file ( gclib.dll ) would differ from where it would be placed for a 32-bit browser. classic client 6.3.12 for 64 bits