Using OutputDebugString requires coredll.dll which is only available on WinCE.

[ban-dana]

According to blame on the OutputDebugStringAppender.cs, it used to be under #if NETCF which later was changed to #if NETSTANDARD_2_0_OR_GREATER.

Normally, OutptuDebugString comes from kernel32.dll so this breaks this appender for any modern .net

[FreeAndNil]

@ban-dana Thanks a lot for reporting and fixing the problem.
Do you need a preview version for testing?