


More specifically, the following extensions are not supported: ade, adp, app, asp, bas, bat, cer, chm, cmd, com, cpl, crt, csh, exe, fxp, grp, 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, ocx, ops, pcd, pif, pl, pnp, prf, prg, pst, reg, scf, scr, sct, shb, shs, tmp, url, vb, vbe, vbs, vsd, vsmacros, vss, vst, vsw, ws, wsc, wsf, wsh. Keep in mind that Skype for Business prevents users from sending files with certain filename extensions.

How to Fix Skype for Business File Transfer Failed Check the File Name Extension
