Hi @OLAGANATHAN RAJARAJAN ,
By default, several standard file extensions are blocked on Microsoft Windows SharePoint Services, including any file extensions that are treated as executable files by Windows Explorer.The file extensions blocked by default are:
ade, adp,app, asa, asp, bas, bat, cdx, cer, chm, class, cmd, com, cpl, crt, csh, dll, exe, fxp, hlp, hta, htr, htw, ida, idc, idq, ins, isp, its, 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, printer, pst, reg, scf, scr, sct, shb, shs, shtm, shtml, stm, url, vb, vbe, vbs, wsc, wsf, wsh.
Blocking file types not only blocks file extensions, but also folder names in the latest CU.
Configuring Blocked File Types in SharePoint 2016, You can navigate to: Central Administration >> Security >> Define blocked file types.
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