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Support Article

Enabling FTPS checkbox in FTP Server instance



On enabling the FTPS for an FTP connector which connects to the Microsoft Internet Information Services (IIS) FTP server, the file transfer fails.

Error Messages

[WebContainer : 1] [STANDARD] [  ] [ebit_Claims:05.64.99] (connect.ftp.FTPConnectorImpl) DEBUG| user- Local path resolved to /archive/wasu18/Epic_Upload/Correspondence/FaxFiles/20190629/190628500412_DFC1024_7.pdf
[WebContainer : 1] [STANDARD] [  ] [ebit_Claims:05.64.99] (  connect.ftp.FTPConnectorImpl) DEBUG| user- Remote path resolved to /nbtw2enftp/rfftp-UAT1
[WebContainer : 1] [STANDARD] [  ] [ebit_Claims:05.64.99] (  connect.ftp.FTPConnectorImpl) DEBUG| user- resolving file at /archive/wasu18/Epic_Upload/Correspondence/FaxFiles/20190629/190628500412_DFC1024_7.pdf
[WebContainer : 1] [STANDARD] [ ] [ebit_Claims:05.64.99] (.BAC_FW_CorrFW_Int_Fax_.Action) ERROR| user- Failed to transfer 190523500203 file
    at com.pegarules.generated.activity.ra_action_ftpconnectandtransferfile_def18b976919777d45f9603d498fa7dd.step7_circum0(
    at com.pegarules.generated.activity.ra_action_ftpconnectandtransferfile_def18b976919777d45f9603d498fa7dd.perform(
    at com.pega.pegarules.session.internal.mgmt.Executable.doActivity(
    at com.pega.pegarules.session.internal.mgmt.Executable.invokeActivity(

Steps to Reproduce

Transfer files using the FTPS to FTP server using Microsoft IIS.

Root Cause

Microsoft IIS server adheres to the RFC where a Protection Buffer SiZe (PBSZ) command must precede a PROT command for FTPS.


Apply HFix-54008.

Published October 22, 2019 - Updated October 8, 2020

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