Restricted file types in Slack Connect

To help keep Slack secure, certain types of files cannot be added to Slack Connect channels and direct messages (DMs).


Blocked file types

  • .7z
  • .ade, .mde
  • .adp
  • .apk
  • .appx, .appxbundle
  • .aspx
  • .bat, .com, .dll, .exe, .msi
  • .cab
  • .cmd
  • .cpl
  • .dmg
  • .gz
  • .hta
  • .ins
  • .ipa
  • .iso
  • .isp
  • .jar
  • .js
  • .jse
  • .jsp
  • .lib
  • .lnk
  • .msc
  • .msix, .msixbundle
  • .msp
  • .mst
  • .nsh
  • .pif
  • .ps1
  • .scr
  • .sct, .wsc
  • .shb
  • .sys, .vb
  • .vbe
  • .vbs
  • .vxd
  • .wsf
  • .wsh
  • .tar

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