All,
Previous versions used: Windows 7 openssl-1.0.2s libssh-0.9.0 VS2017 Strawberry Perl This configuration worked without issue. Then, MS EOL'ed Windows 7. My configuration is now: Windows 10 openssl-1.1.1d (someone on libssh told me that I needed this version) VS2017 Strawberry Perl NASM Build instructions for x64 command console: set PATH=%PATH%;%USERPROFILE%\strawberry\perl\bin set PATH=%PATH%;%USERPROFILE%\nasm-2.14.03rc2 cd %USERPROFILE%\source\oss\openssl-1.1.1d perl Configure VC-WIN64A --prefix=%USERPROFILE%\oss --openssldir=%USERPROFILE%\oss nmake nmake test nmake install Now, with Windows 10, I get a "Microsoft Visual C++ Runtime Library" box with the following text: Debug Assertion Failed! Program <mysshApp.exe> File minkernel\crts\ucrt\src\appcrt\heap\debug_heap.cpp Line: 908 Expression: is_block_type_valid(header->_block_use) <snip> So, I connect to the app with the VS debugger and find: file: pki_crypto.c: function: pki_signature_from_ecdsa_blob() line: (1769) SAFE_FREE(raw_sig_data); is what VS claims generated this error. >From the above description, can anyone tell me what I have done wrong in the build? Or, have I stumbled upon a bug? Thanks in advance for any assistance you can provide. Andy