EventFerry › Import Outlook Calendar to Google vs sync
Importing an Outlook calendar into Google is not the same as syncing it
An Outlook calendar imported into Google Calendar is a snapshot. Meetings added, moved, or cancelled in Outlook afterward will not update that imported copy. To receive later changes, use a calendar subscription or a synchronization service.
Quick answer
Choose Import for a one-time migration, From URL for a free but delayed read-only subscription, or EventFerry when Outlook changes should be copied to Google every 15 minutes. Importing the same file again is not continuous synchronization and can create duplicates.
Import, subscribe, and sync compared
| Method | What reaches Google | Later Outlook changes | Best use |
|---|---|---|---|
| Import an ICS or CSV file | A one-time copy | Do not update | Moving historical events once |
| Google Calendar “From URL” | A separate, read-only subscribed calendar | Update when Google fetches the feed, often after a delay | A free calendar view when speed is unimportant |
| EventFerry | A separate Google calendar managed by EventFerry | Checked every 15 minutes, plus Sync now | Keeping Outlook visible in Google automatically |
What happens when you import an Outlook calendar
You export an .ics or .csv file from Outlook and upload it under Google Calendar › Settings › Import & export. Google creates events from the contents of that file. The file is not a connection back to Outlook.
Google explicitly says imported events do not stay in sync. Microsoft likewise describes an Outlook export as a snapshot that will not reflect later changes.
What happens when you subscribe with “From URL”
Outlook publishes an ICS address and Google periodically reads it. The subscribed calendar remains separate and read-only in Google. This does receive future Outlook changes, but Google controls the refresh schedule. Microsoft says an Outlook calendar viewed through Gmail may update only every 24–48 hours.
Follow the Outlook ICS-link instructions, then add the link under Other calendars › From URL. If the calendar stays empty, use the From URL troubleshooting checklist.
Why repeatedly importing files is a poor substitute for sync
- Google cannot know which imported event should replace an earlier copy.
- Changed meetings may coexist with their old imported versions.
- Cancelled meetings can remain on the imported calendar.
- Google notes that guests and conference information are not imported with an event.
- Recurring events imported from CSV can become separate one-off events.
Use EventFerry for automatic Outlook-to-Google copying
EventFerry reads the private calendar link Outlook publishes, checks it every 15 minutes, and updates a dedicated Google calendar. It does not need your Microsoft password and does not modify your personal Google events.
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Importing and syncing questions
Why did my imported Outlook calendar stop updating in Google?
It did not establish an updating connection. An import copies only the events in the file at that moment. Subscribe to the Outlook ICS URL or use EventFerry for future changes.
Can I import the Outlook calendar again to update it?
You can import another file, but Google may create duplicate events because an import is not designed to reconcile an earlier snapshot. A subscription or sync service is safer for ongoing changes.
Does Google Calendar From URL sync automatically?
It periodically reads the Outlook ICS feed, but it is not immediate. Microsoft documents that Gmail may take 24–48 hours to refresh an Outlook calendar subscription.
Does EventFerry create two-way synchronization?
No. EventFerry deliberately copies one way from Outlook into a separate Google calendar. Changes made to that Google copy do not modify the source Outlook calendar.