An ICS file with appointments will not import
ICS files from external systems are often subtly different. One missing field and the whole import is rejected, or worse, half-done.
Try this first
- 1Open the ICS file in a text editor. It should begin with BEGIN:VCALENDAR and end with END:VCALENDAR.
- 2Create a test appointment in an empty calendar first; import the file there to see if it loads at all.
- 3In Outlook: use the import function, do not double-click the file. Double-click opens one event, import handles the whole batch.
- 4Still failing? Ask the vendor for an ICS export in standard format without their custom extensions.
When to bring us in
If it is hundreds of appointments or a recurring series you do not want to lose, get in touch; we can clean the file before importing.
See also
- Outlook crashes or freezes on large attachmentsUsually the mailbox cache is the culprit, not Outlook itself. Shrinking or relocating usually helps within ten minutes.
- Teams: they cannot hear me, or I hear nothingIn our experience Teams usually picked the wrong audio device after a Windows update or a new headset.
- OneDrive has stopped syncingThe cloud icon is grey or has a warning. Locally changed files are not showing up for colleagues.
None of the above fits?
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