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How to fix Windows 10 Mail App not syncing
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How to fix Windows 10 Mail App not syncing

by AshwinSeptember 5, 2015

It’s a strange thing, but I just keep running in to one broken feature or another in Windows 10.

Windows-10-Mail-App-Sync-Fix

This time, my headache was the Mail for Windows 10 app.

Yes, it is the same Mail and Calendar app which you can find on the Windows Store. Up until a few days ago, I had absolutely no issues with the Mail app. Frankly, I don’t use it often, and just use it as a “newsletter” mailbox, to collect emails about deals from various online retailers (digital and physical products).

Nevertheless, I was incredibly annoyed to find that it didn’t work. Well, actually it just kept saying me that my inbox was upto date. When I tried syncing folders, it gave me a message which said “Nothing to show here”. This raised a suspicion in my mindm something wasn’t right here.

To test if the app works, I fired up Gmail on my phone, to send an email to my outlook account, and guess what? It never arrived. The first thing I did, was to check the Windows Store for an update for Mail and Calendar, but I couldn’t find any.

It was then I remembered something related to my issue, a couple of days earlier, I began testing an app. It is a third party app to disable several privacy settings, and is called “Destroy Windows 10 Spying”. But I was still stumped, as all the settings in the Mail app were unchanged. I could not narrow down to the culprit somewhere hidden in the settings, which had caused the sync issue in the Mail app.

A quick search revealed the solution, and it was from none other than Microsoft itself.

How to solve Windows 10 Mail App not syncing

1. Press the key combo Windows + I to open the Settings App (or click on Start > Settings).
2. Click on the Privacy tile, and then on Calendar in the left pane.
3. Now, on the right pane, you will see three options:

  • Let apps access my Calendar.

Just below it, you will find the other two listed under Choose apps that can access calendar:

  • App Connector
  • Mail and Calendar

Enable all three options, and now open the Windows 10 Mail App, it should start syncing your mails.

Windows-10-Mail-App-Sync-How-to-Fix

It sure was a wonderful idea from Microsoft to merge the Mail and Calendar app, and create a nice mess. Then why on earth does Windows 10 have the Calendar on the System Tray? All other apps including web browsers use the System Time/Date to authenticate certificates for websites, before loading them, but it appears that metro apps don’t.

44 Comments
  • JD
    September 27, 2015 at 9:05 pm

    THANK YOU!!!! I am so glad you shared this.

    • JK
      November 18, 2016 at 8:55 pm

      I have tried this on a brand new laptop and it will not sync. In the bottom right hand corner it comes saying yahoo settings not up to date.

  • Lisa
    September 29, 2015 at 3:15 am

    For some reason, only certain emails are not syncing. Anybody else having this problem? I’ve double checked that all of those apps are enabled.

    • MD
      November 19, 2015 at 2:22 pm

      to the right of the inbox – did you choose “ALL” “UNREAD” or “FLAGGED” ?

      mine was set to UNREAD so I only sync’d with the UNREAD Mail until I switched to ALL

    • Karalee
      July 15, 2016 at 7:40 pm

      Did you get this resolved? I am having the same problem and can’t get my resolved. I really need to communicate with the accountant! lol Karalee

    • Barb
      March 23, 2017 at 2:06 am

      I have tried 4 different email servers and none will sync

  • Pao
    October 2, 2015 at 10:37 am

    WOW. Thank you for relieving my headache!

  • Alan Heron
    October 3, 2015 at 6:57 pm

    Thanks loads.. Pity MS couldn’t be the ones that sort these problems.. Seems they only like causing them..

  • Seb
    November 1, 2015 at 5:27 pm

    Thanks a lot, simple and clear.
    Works immediately!

  • Jason
    November 2, 2015 at 2:37 pm

    All thee were enabled weeks ago. I just came back from being out of town for 5 days and the last email I have was from the day before I left. trying to sync…but keeps saying I’m no connected to the interest….which I must be or I wouldn’t be tying this. Any other suggestions?

  • PAH
    November 13, 2015 at 4:26 pm

    Thanks ASHWIN, who says windows 10 is the answer to windows 8 !!!

  • Diego Suarez
    December 1, 2015 at 7:56 am

    Thank you soooo much!!
    If I could hug you or buy you dinner I would without a doubt,

    Kind regards Diego

  • C
    December 14, 2015 at 10:29 pm

    I tried 2 days to fix the sync. Disabled the Firewall, changed Gmail settings, tried imap and pop3 variations, turned the mail&calendar apps inside out.. and all I really needed was this advice about the three boxes.

    THAAAAAAAAAAAAAAAAAAAAAAAAAAANKS ALOT MATE!!!!

  • Mary Lou Graham
    December 15, 2015 at 4:17 pm

    I really do not like Windows 10. There are so many issues that I won’t go into them. How do I get Windows 7 back?? Please help. I cannot find my contact list when I try to address an outgoing email.

  • Sais
    December 16, 2015 at 7:37 am

    Worked for me, thanks.

  • Coin Marlow
    December 17, 2015 at 12:31 pm

    Still not syncing…I’m running out of ideas!

  • Anil
    January 1, 2016 at 9:15 am

    thanks Ashwin, really helpful…..

  • Mike
    January 24, 2016 at 12:39 am

    I was stumped, and had exactly the same issue. Thank you so much!

  • Anil Sood
    January 28, 2016 at 12:32 pm

    Hi Ashwin

    I tried every thing explained in your tutorial above but still Mail App is not synchronising my Yahoo and GMail. It still gives back Error Code ox80072752. Any more solutions.

  • Jumangee
    February 7, 2016 at 11:13 pm

    Thank you.
    Very simple steps yes it’s the only thing that actually helped.

  • Reedie
    March 20, 2016 at 5:56 pm

    Hi Ashwin, Tried your solution above and still no joy? If you go into ‘Mail’ app settings you can change the sync settings but there is no ‘done’ (save) button, which according to Microsoft ‘help’ is there!

    • Ashwin
      March 21, 2016 at 11:45 am

      Actually, the Save option appears when you click on the Done button. This works in the latest version of the app too (17.6568.46121.0).

  • maurene
    July 2, 2016 at 11:56 pm

    I have Hotmail account and Gmail account until recently worked fine……now.neither is still not syncing..getting 0x80048830 message….I have to manually press sync icon for it to work….

  • John Nacional
    July 7, 2016 at 12:58 am

    Hi Ashwin, I did those steps for lik a couple of times now. But it is still not syncing, only my Yahoo mail is not syncing.

  • Michelle Perry
    July 8, 2016 at 11:37 pm

    All of my settings as you mentioned above are already on? But i still cannot sync my yahoo Email in windows 10 and it keep telling me it is out of date and when I put my passowrd , there is nothing to show here..:-(

  • Mattie B
    July 30, 2016 at 3:03 pm

    Thank you, Ashwin! Although the options were ‘On’, I Saved three times and something happened because the sync is happening right away.

    Not that I am close to being a Win10 guru, but it seems as if Done / Resave refreshed something because it’s working correctly.

  • Daniel
    August 2, 2016 at 12:25 am

    I had all these things set but when I try to access my deleted items for instance, it continues to say “not sync yet”.

  • Jim Hendry
    August 13, 2016 at 2:35 pm

    Worked a treat – thank you.

  • Rahul
    August 29, 2016 at 9:02 am

    Mail and calendar not showing in Choose apps that can access and send email window 10 mobile??

    What to do?

  • Howard
    October 12, 2016 at 4:00 pm

    Thanks for this. But my Settings screen is subtly different. Under Calendar, Let apps access my calendar is On but the two other options beneath it, also both On, are “People” and “Windows”.
    Do you please have any advice? I too am getting the message (Outbox) “not yet synced”.

  • Nasim
    October 22, 2016 at 3:44 pm

    I tried all the steps above and my problem stays the same, but I found out that my problem was from my yahoo account and not the application! I tried Yahoo account key and that feature prevented my mail to sync, now that I disabled it everything seems to work fine!

  • saurabh gupta
    November 10, 2016 at 9:56 pm

    All other emails like outlook, Gmail and even icloud are working fine. Only the yahoo email id’s are not sync or showing “Nit Synced Yet”. For initial setup everything was working fine and was able to see Yahoo emails. But after like 1/2 hr or so the above error started showing. No idea why. All the settings you said were already activated in my system.

  • Judy
    November 13, 2016 at 12:20 am

    All were on already still not working

  • Stan Lea
    November 15, 2016 at 7:57 am

    This is out of date info now. Those options are no longer available and it says something like Mail & Calendar are allways allowed to access… etc. Either way my email app on W10Mobile refuses to sync no matter what settings I enable it also refuses to play new mail notification sounds as well! Crap App. Seems only ‘fix’ is to rebuild the entire phone OS from scratch – and spend another week fine tuning it all again – pathetic excuse for a smartphone app.

  • Britton
    November 15, 2016 at 11:21 am

    I had this issue after installing the Windows Mail App on my Android phone. Somehow due to the way MS wants to sync data across all Windows devices it changed the setting on my desktop without my knowledge. Thankfully the fix was simple. This may not work for everyone especially if you have used 3rd party software to modify Windows background processes, or edited the registry to disable telemetry and other data sync options.

    Step one: Removed the app from my phone.

    Step two: Open the mail application on your desktop/laptop and go to the affected account.
    (In this case it was the Microsoft Outlook account.)

    Step three: Right click on the name of the account under the Accounts section on the left side and select account settings.

    Step four: Choose “Change mailbox sync settings” from the list of options.

    Step five: This is what fixed it, change whatever it says in the Server field (example m-outlook.com) to http://www.outlook.com or simply outlook.com and select Done at the bottom.

    If that was indeed the problem in your case then your outlook account should sync up instantly without anymore errors.

    This was just testing and found to be working on Windows 10 Build 14393.447 with all applications manually updated to the most recently released versions as of Nov. 15, 2016.

    Good Luck!

  • Rishi Nair
    November 25, 2016 at 3:14 pm

    anybody got an answer?
    I have set up an email address from my internet provider (pop3) and when I try to do the initial sync for the account I get the error 0x80004005.

    I have double checked my settings and they are correct.

  • Akshay
    December 23, 2016 at 4:52 am

    I don’t have app connecter and mail to calendar option available.
    I have only People and Windows available on the right side pane.

  • Gervin
    March 9, 2017 at 3:13 pm

    I have a quick question, in my Settings when i click on privacy instead of listing me App Conncetor and Mail and Calendar it gives me “People” and “Windows” so i don’t know if something is wrong with my Pc or not because when the Year started, this problem also started and it pisses me off when i don’t see any of those Emails Notifs tbh. Thanks in advance for the replies.

  • Barb
    March 23, 2017 at 2:09 am

    Mar. 2017. just got a NEW PC with W10 on it. I have been trying for a WEEK to get my main email server to sync and it won’t. I tried 4 other email clients and none would sync either! I am at the end of my ropes with 10! All my settings are fine. That stupid error keeps coming up. I’d give my right arm to have my windows 7 back….

  • Duncan
    July 20, 2017 at 1:22 pm

    Under the Calendar window referred to above, where it says “Choose apps that can access calendar”, my screen shows “People” and “Windows”, but not “App connector” and “Mail and Calendar” as described above. I’ve downloaded all relevant Windows updates, so can anyone solve this one? It also says my “btopenworld” account settings are out of date but, despite having followed all the guidance on various forums, this does not work.

  • Duncan
    July 20, 2017 at 1:29 pm

    I also checked the Mail version I have and this is 17.8241.41275.0, which is different to the version in the guidance above. Could this be the reason and, if so, how can I fix it?

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