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Outlook Fix · All Versions

Outlook calendar not syncing with your phone

If your Outlook calendar shows different appointments on your PC than on your Android phone, it's often because the two devices aren't looking at the same calendar — or calendar sync is switched off in the Outlook app. Here's how to fix it in a few minutes.

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By the 365 Techies team · Reviewed 6 October 2026

The real cause

Why your calendar won't sync to your phone

Often this comes down to which calendar the appointment actually lives in. A calendar stored in a Microsoft 365 or Exchange account lives on Microsoft's servers, so it syncs everywhere automatically — your PC, the Outlook app on your Android phone, Outlook on the web, the lot. But a calendar stored in a local PST file on your PC only exists on that one computer. It has nowhere to sync from, so it will never appear on your phone no matter how long you wait.

The other common culprit is simply that calendar sync is turned off in the Outlook app on your phone, or Android's own privacy settings are blocking Outlook from touching your calendar. And very often an account that was added as POP or IMAP (a mail-only setup) will happily sync email but silently drop calendars and contacts — because POP and IMAP are email-only protocols that don't carry calendar data at all. If that's the case, remove the account and add it back as a Microsoft 365 / Exchange account (or with Google's own sign-in for Gmail) — but if your provider only offers IMAP or POP, that address can't sync a calendar at all, and it's worth asking the provider what they support.

So before you start deleting things, the first job is to work out which of those three situations you're in.

// WINDOWS PCS ONLY

We do not support Outlook on Apple Macs, iPads or iPhones. Apple does not allow our remote-support tool to take control of an iPad or iPhone (an Apple restriction), and our remote support covers Windows PCs only. On an Apple device, Microsoft’s own Outlook help is the place to start.

// FIX IT WITH ME · STEP BY STEP

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The steps from this guide, one at a time, in the order that fixes the most cases fastest. Tell it what happened and it shows the next step. Nothing here leaves your device.Last reviewed 6 October 2026

Checking which Windows you have…STEP 1 OF 5
  1. 01Confirm the calendar is on your account, not a local PST

    On your PC, open Outlook's calendar and check the heading your appointments sit under. If it's a Microsoft 365 or Exchange account it will sync; if it's a Personal Folders or PST calendar, those appointments must be moved to your account calendar before they can reach your phone.

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Do this first

The quick checks that fix most cases

Start on your PC. In the folder list down the left of Outlook, click the calendar icon and look at the calendar headings. If you see your appointments under a Microsoft 365 or Exchange account name, good — that will sync. If they're under something like "Personal Folders" or an .pst file, that calendar is local and needs moving to your account calendar before it can ever reach your phone. We can migrate those appointments across for you without losing a thing.

Now the phone. In the Outlook Android app, tap your profile picture (top-left) > the gear icon for Settings > tap your email account > make sure Sync Calendars is switched on. (If that toggle is greyed out and won't turn on, the account was added as IMAP or POP — remove it and re-add it as a Microsoft 365 / Exchange account, or with Google sign-in for Gmail, if your provider supports that.) Then leave Outlook and open Android's own Settings > Apps > Outlook > Permissions and set both Calendar and Contacts to Allow. Give it a minute and the appointments should flow through.

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// GOOD QUESTIONS

Frequently asked

Why does my Outlook calendar sync email but not appointments to my phone?

That's the classic sign your phone added the account as POP or IMAP, which are email-only protocols and don't carry calendars or contacts. If your provider supports it (Microsoft 365, Outlook.com and Gmail do), remove the account from the Outlook app and add it back using the Microsoft 365 / Exchange option (or Google sign-in for Gmail), and the calendar will start syncing. If your provider only offers IMAP or POP, that address can't sync a calendar. Alternatively, an appointment stored in a local PST on your PC will also fail to reach the phone because it never leaves the PC.

Do I need Microsoft 365 or Exchange for my calendar to sync everywhere?

You need an online calendar from a provider that supports calendar sync, such as Microsoft 365, Outlook.com or Gmail. A Microsoft 365 or Exchange calendar lives on Microsoft's servers, so it appears automatically on your PC, your phone and the web. A calendar kept in a local PST file has nowhere to sync from, so it will only ever show on the one PC it was created on.

I turned on Sync Calendars but nothing changed — what now?

Two things to try. First, check Android's own permissions: Settings > Apps > Outlook > Permissions and set both Calendar and Contacts to Allow. Second, in the Outlook app tap your account and scroll to the bottom to choose Reset Account, which refreshes the connection to the server. If it's a shared or M365 calendar on the desktop that's stuck, removing and re-adding the account on the PC usually clears it.

Am I looking at the wrong calendar?

Very possibly. If you have several calendars (a personal one, a work M365 one, maybe a shared one), your phone may be showing a different calendar from your PC. Tap the calendar view options in the Outlook app and make sure the account calendar you actually book into is ticked, and that you're not viewing a separate local calendar by mistake.

Will fixing this delete any of my appointments?

No. Turning calendar sync on, resetting the account, or re-adding it as Exchange doesn't delete anything — your appointments live safely on Microsoft's servers and simply re-download to the device. The only calendars that need care are local PST ones, which we copy across to your account calendar before making any changes.

Can 365 Techies fix this without me being technical?

Absolutely — this is exactly the kind of thing we sort remotely in minutes. Call 01202 775566, we'll phone you first, then connect to your screen over Splashtop so you can watch every step. Access ends the moment we're done. We support Outlook on Windows and the Outlook app on Android.

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Still not syncing?

Call 365 Techies on 01202 775566 and we'll watch your screen over Splashtop, phone you first, and get both devices showing the same calendar — usually in minutes.

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