I found the reason of a 20 year old bug that did break software compatibility with #win95 . Converting strings with APIs like WideCharToMultiByte() and MultiByteToWideChar() can use the flag CP_UTF8, bit it was only supported on #NT4 and #win98 but fails on Win95.

Many codebases (e.g. #openssl ) use the ANSI variants of #winapi and I tried to optimize it by standardized UTF-8 strings. It worked everywhere, except on the outdated Win95.

Now I know the reason ... better late than never.

#WinAPI ... such beautiful design!

https://docs.microsoft.com/en-us/windows/win32/api/wincred/nf-wincred-creduicmdlinepromptforcredentialsa