Our good friends at Mess with MSN Messenger posted the full list of blocked file extensions regarding MSN Messenger 7 which as follows:
.ade .adp .app .asp .bas .bat .cer .chm .cmd .com .cpl .crt .csh .exe .fxp .hlp .hta .inf .ins .isp .its .js .jse .ksh .lnk .mad .maf .mag .mam .maq .mar .mas .mat .mau .mav .maw .mda .mdb .mde .mdt .mdw .mdz .msc .msi .msp .mst .ops .pcd .pif .prf .prg .pst .reg .scf .scr .sct .shb .shs .tmp .url .vb .vbe .vbs .vsd .vsmacros .vss .vst .vsw .ws .wsc .wsf .wsh
If you try and send a file with one of these extensions, your contact will recieve this message:
emailhere@msn.com tried to send you a file (filename.extension). This file has been blocked because it is potentially unsafe.
Me, personally hope you can choose to accept the file so you dont have to send via another method such as email in the next version.
hello