What you are actually revoking
A Proton Calendar share and an exported calendar file look similar in a list of downloads, but they behave differently. A link share stays connected to your calendar and reflects permitted details; an ICS file is a snapshot taken at import time. Before removing anything, identify which one you distributed and to whom.
With a paid Proton plan, calendars can be shared by link from the web app; anyone holding that link can view the permitted calendar details. Source
That distinction sets the scope of what a revocation can do. Removing a link cuts off future access through that link. It does not reach into a calendar app where someone already imported a file.
Step 1: Confirm the sharing level before you touch anything
The brief for this task asks you to check three things first: who the audience is, whether the link grants limited or full view, and which dedicated link was actually sent. The approved facts establish that link sharing exists on a paid plan and that the link exposes “the permitted calendar details,” but they do not spell out the exact view options or their names. Treat the labels you see in your own account as the source of truth, and do not assume a label means more or less access than it says.
| Check | Why it matters | What to do if unsure |
|---|---|---|
| Who received the link | A link works for anyone holding it, so the audience is everyone who has the URL | Ask the recipients, or check your sent messages, before revoking |
| Limited or full view | The permitted details depend on the level chosen when the link was created | Read the current setting in the calendar settings before deleting |
| Which dedicated link was sent | A calendar can have more than one labelled link; deleting the wrong one leaves the shared one live | Match the label to the link you distributed |
This is editorial advice built on the approved facts, not a claim about specific menu labels. If the account does not show a matching label, stop and confirm the link identity another way rather than deleting the first entry you see.
Step 2: Remove only the intended link
The removal action lives in the calendar settings, not in the calendar view itself. Work from the calendar whose link you want to revoke, and use the Actions menu attached to that link.
Calendar links can be labelled and removed through the calendar settings Actions menu. Source
Labels are the practical safeguard here. If you labelled links when you created them, the Actions menu gives you a way to tell them apart before removal. If you did not, consider labelling remaining links after this cleanup so a future revocation is a one-step decision rather than a guess.
Do not paste a real shared URL or any decryption key into a note, ticket, chat or draft while you work. The link itself is the access credential, and copying it around widens the audience you are trying to narrow.
Step 3: Understand what deletion does and does not do
The most common confusion is expecting a revocation to pull back a calendar that someone already imported. It will not.
Deleting a link stops other calendars syncing through it; a downloaded ICS import is a separate static copy and does not sync changes. Source
So the honest limit is this: after you delete the link, anyone who already imported the calendar as a file keeps that copy. You cannot recall it, and you should not tell recipients that you have. What you can say accurately is that the live link no longer works and that no further sync will flow through it.
If the calendar’s contents were sensitive, the practical follow-up is to change what the calendar contains going forward, not to promise a recall you cannot deliver. This is editorial advice; the approved facts do not describe any additional revocation mechanism.
A short checklist
- List everyone who received the link, and confirm which link label each person has.
- Open the calendar settings for the correct calendar and check the current view level.
- Match the label to the link you actually distributed.
- Remove that link through the Actions menu, and only that link.
- Tell recipients that the live link is revoked and that imported copies are unaffected.
- Keep no copy of the shared URL or key in notes, tickets or messages.
- Label any remaining links so the next cleanup is unambiguous.
When the confusion is a different calendar
People often arrive at this task after seeing a calendar link somewhere unexpected, and the calendar in question turns out not to be Proton at all. If the link you are chasing belongs to Google Calendar, the visibility question comes first: whether the calendar is public at all changes what there is to revoke. See the guide on checking whether your Google Calendar is publicly visible before acting on that calendar.
For the Proton case, the order stays the same: identify the link, confirm the view level, remove only that link, and describe the result honestly to the people who hold it.