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Question:

FTP 550 The supplied message is incomplete. The signature was not verified.

Sep 14 '15 at 08:46

This error message is an indication that the Microsoft IIS FTP server has a bug that needs to be patched. See https://support.microsoft.com/en-us/kb/2888853

Accepted Answer

This error message is an indication that the Microsoft IIS FTP server has a bug that needs to be patched. See https://support.microsoft.com/en-us/kb/2888853