A “Working Offline” box will appear in the lower-right side of the Outlook window. A white “X” on a red circle will appear on the Outlook app icon in the taskbar (Windows only).

If the background isn’t dark-grey, “Work Offline” isn’t enabled.

If the background isn’t dark-grey, “Work Offline” isn’t enabled.

If the button wasn’t active, try clicking it twice—once to active “Work Offline” mode and once to disable it—before proceeding.

You may have to enable and then disable the “Work Offline” feature again a few times before “Work Offline” will turn off.