B08 - Attachment 0004 - Blocked File Extensions_Revised.pdf

This is an attachment listing blocked file extensions for federal contract solicitation W519TC-26-R-0032. The document specifies 79 file types that are prohibited from submission, effective 12 August 2026. The blocked extensions include executable files (*.exe, *.com, *.bat, .cmd), scripting languages (.js, *.vbs, *.vbe, *.wsf, .wsh), web-related files (.html, *.htm, *.shtm, *.shtml, .mht, .mhtml), database files (.mdb, .mde, .mda, .mdz), installation packages (.msi, .msp), and compressed archives (.zip). Additionally blocked are files such as shortcuts (.lnk), help files (.hlp, .chm), registry files (.reg), and various application-specific formats (.asp, *.asx, *.swf, *.xml).

This attachment serves as a security and compliance measure to prevent submission of potentially malicious or executable content during the solicitation process. Contractors and offerors must ensure all submission materials use only file types not included on this blocked list.