Discussion: https://github.com/Exiv2/exiv2/issues/1200#issuecomment-623975537

conanfile.py

@@ -40,6 +40,8 @@ class Exiv2Conan(ConanFile):
             # libopenssl (a transitive dependency)
             if os_info.is_windows:
                 self.requires('libcurl/7.69.1')
+                self.options['libcurl'].with_openssl = False
+                self.options['libcurl'].with_winssl = True
             else:
                 self.requires('libcurl/7.64.1@bincrafters/stable')
 

samples/CMakeLists.txt

@@ -105,7 +105,9 @@ if (EXIV2_ENABLE_WEBREADY)
         if (USING_CONAN)
             target_compile_definitions(conntest PRIVATE ${CONAN_COMPILE_DEFINITIONS_LIBCURL})
             target_link_libraries(conntest PRIVATE ${CONAN_EXE_LINKER_FLAGS_LIBCURL})
-            if (NOT APPLE)
+            if ( MSVC ) 
+			    target_link_libraries(conntest PRIVATE Crypt32 Ws2_32 ${CURL_LIBRARIES})
+			elseif (NOT APPLE)
                 target_link_libraries(conntest PRIVATE CONAN_PKG::OpenSSL)
             endif()
         endif()

src/CMakeLists.txt

@@ -182,7 +182,9 @@ if (EXIV2_ENABLE_WEBREADY)
         if (USING_CONAN)
             target_compile_definitions(exiv2lib PRIVATE ${CONAN_COMPILE_DEFINITIONS_LIBCURL})
             target_link_libraries(exiv2lib PRIVATE ${CONAN_EXE_LINKER_FLAGS_LIBCURL})
-            if (NOT APPLE)
+            if ( MSVC ) 
+                target_link_libraries(exiv2lib PRIVATE Crypt32)
+            elseif (NOT APPLE)
                 target_link_libraries(exiv2lib PRIVATE CONAN_PKG::OpenSSL)
             endif()
         endif()