: You must use the 32-bit version of regsvr32.exe located in the SysWOW64 folder to register it.
A: Because CAPICOM is old and rarely used legitimately, antivirus heuristics may detect it as suspicious, especially if not digitally signed by Microsoft. Whitelist it if you trust your source. capicom.dll 64-bit windows 10
If you still encounter issues after following this guide, check the Windows Event Viewer under "Applications and Services Logs" for specific CAPICOM-related errors, and verify that no third-party security software is blocking DLL registration. : You must use the 32-bit version of regsvr32
%windir%\SysWOW64\regsvr32.exe %windir%\SysWOW64\capicom.dll capicom.dll 64-bit windows 10
Use CAPICOM only as a short-term bridge for legacy systems. Plan to migrate away.
Install the Microsoft Visual C++ 2005 Redistributable (x86) even on 64-bit Windows.