Removing an attachment from a Google Calendar event changes the event’s reference to that file. It should not be treated as deleting the underlying Drive document or withdrawing copies already opened by guests. Keep event cleanup and file-access management separate.
Select the correct attachment
Open the event on a computer and inspect the description’s attached files. Confirm the filename and document identity before removing anything, especially when several versions of an agenda or report are listed. Do not rely on a shortened title alone.
Remove the event reference
Hover over the intended attachment, choose Remove attachment, and save the event. Google’s attachment guidance describes this sequence. Reopen the event to confirm that the reference was removed from the intended meeting.
If an updated file should replace it, attach the correct version and review that file’s permissions separately. A replacement filename does not establish that its contents are approved or current.
Verify access and communication
Inspect the underlying Drive file through an appropriate owner account if access must also change. Removing a calendar reference is not a substitute for reviewing the document’s existing sharing rules. Check guest communication when people may still follow an earlier invitation or saved link. Do not delete a shared document merely because it no longer belongs in one event. The completed action should be described narrowly: the identified attachment reference was removed and checked, while file retention, permissions, and previously distributed copies remain separate matters to handle only when required. Keep an approved replacement identifiable.
References
Reviewed against the linked official product guidance on November 4, 2026. Features, limits, screen labels, and access can vary by account, platform, region, and organization policy.