LOCKED TENANTS

How to See Calendars IT Blocked From Every Other Tool

Updated July 2026 · 5 min read

You can look, but you cannot take anything with you

The export button is grayed out. The secret iCal address is gone from settings. Third-party apps get "approval required" and the ticket never comes back. Sharing to external addresses silently fails. If that list sounds familiar, you are on a locked tenant, and you are here because you still need to see calendars IT blocked from syncing anywhere else. The good news: on almost every locked tenant, one path is always left open, because closing it would mean you could not work at all.

What a locked tenant actually blocks

Admins on Microsoft 365 and Google Workspace can, and on regulated or security-conscious tenants routinely do, shut every data exit:

None of this is IT being difficult for sport. Calendars hold client names, deal terms, and dial-in links, and every exit above copies that data somewhere the org cannot audit. The locks are rational. They just leave you, the person with three other calendars to reconcile, staring at four browser tabs.

Why the usual advice does not work here

Search for "sync Outlook to Google" and every guide assumes at least one exit is open: an export file, a feed URL, or an app connection. On a locked tenant all three are shut, so the guides dead-end one step in. Tools built on OAuth connections, including good ones like CalendarBridge and OneCal, dead-end at the consent screen for the same reason. If you want the full background on why, the hub guide covers it: a calendar without admin approval.

What no tenant blocks is you, signed in through their own login page with their own MFA, looking at your calendar in a browser tab. That is not an exit. That is the product working as intended. It is also all you actually need.

The workaround that asks IT for nothing

manyCalendars is a desktop browser extension with a feature called Tab Sync. A calendar in your combined view follows a tab you are signed into, and the events visible in that tab appear in one merged view next to every other calendar you have added. The blocked Outlook tenant, the locked Workspace domain, your personal calendar: each one stays in its own tab, signed in as you, and manyCalendars reads what you can already see.

Nothing is installed on the tenant, no permission is requested, no data leaves your machine, and it is read-only on the source. There is no exit for IT to close because no data is exiting: the merged view lives in the same browser the calendar was already displayed in. It is the only calendar tool we know of that works when IT says no. How the merge works in detail is covered in merge calendars without OAuth, and the single-account version in sync a calendar without connecting the account.

The honest limits: it is a desktop browser extension, not a phone app. Tab Sync shows what is visible in a tab you can open yourself, so it cannot reveal a calendar you have no access to. And because it is read-only, you still create and edit events in the source calendar, not in manyCalendars.

Try it against your locked tenant today

The Free tier is 100 percent local, needs no account, and takes unlimited manual calendars from .ics files and feed URLs, useful for the calendars that are not locked. Tab Sync, the part that handles the blocked ones, is in Pro at $15/month or $150/year ($12.50/month equivalent). Every install starts a 14-day trial of everything, no card, no account, so you can point it at your real locked tenant before deciding. Plans are on the pricing page, and the extension is at the install page.

If IT ever does open the doors, great, use whatever they approve. Until then, you can stop asking. For the broader playbook, see how to see your work calendar without IT help.

← Back to the full guide: a calendar without admin approval

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