Hotfix TIB_mftccis_7.3.0_HF-006.zip can be downloaded from TIBCO Support Portal (https://support.tibco.com).  
 
You will need to provide your TIBCO Support Portal credentials.  Once logged in you can download the hotfix by selecting the “Downloads” -> “Hotfixes” option. Then to download the hotfix, go to:
“/AvailableDownloads/MFT/CommandCenter-InternetServer/7.3.0/”
 
The .zip file has the Readme file inside. Please unzip the file and review the Readme file for instructions on how to apply the hotfix.
 
Introduction
 
This Hotfix is not cumulative and has no dependencies on prior hotfixes. If you 
install another hotfix after applying this hotfix, you may need to reapply this 
hotfix. This hotfix is for TIBCO Managed File Transfer Command Center 7.3.0
and TIBCO Managed File Transfer Internet Server 7.3.0.
 
Closed Issue in 7.3.0 hotfix HF-006 (This Release)
 
MFCC-3111
Sign Applets with new TIBCO Applet Certificate because existing Applet
certificate expired on 10/28/2016.