I suggest you first have normal FTP working, and then try to configure FTPS.
Besides, if there is any error, please paste the complete error messages here.
Note that both FTP command and IE does not support FTPS. So don't expect they can be used to test FTP 7.5 FTPS. There are third party clients you can use, such as FileZilla.
Lex Li
Support Engineer at Microsoft
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