It is frustrating and inconvenient for you.

Fortunately, you could resolve it with the help of thisMiniToolpost.

It is a versatile tool that enables users to manage multiple accounts, access emails, and schedule appointments.

select Check for updates

Accordingly, the first recommended solution is to check the Windows update.

Step 2: In the pop-up window, choose theCheck for updatesoption in the right panel.

Step 3: If there are available optional updates on your PC, install them as well.

click Change mailbox sync settings

Step 4: After updating, reboot your rig.

Step 1: PressWin+Itogether to launch configs and choose theAccountsoption.

Step 2: Next, selectEmail & accountsin the left panel.

change toggles and click Done

Step 3: Click your email account and then selectManagefrom the dropdown menu.

Step 4: In the pop-up window, choose theChange mailbox sync settingsoption to continue.

Step 5: tap the dropdown icon under theDownload new contentoption and chooseAs items arrive.

Windows 10 Email Not Syncing? Here Are 4 Powerful Methods

Step 6: Under the Sync options, switch the three toggles ofEmail,Calendar, andContactstoOn.

Step 7: After that, clickDoneto save the options.

Step 1: Press theWin+Ikey combination to launch parameters, and select thePrivacyoption.

change the toggle to On

Step 2: Scroll down to find and click theEmailoption in the left panel.

Step 3: Click theChangebutton under theAllow access to email on this deviceoption in the right pane.

Then change the toggle toOn.

select Additional troubleshooters

Step 4: Switch the toggle of theAllow apps to access your emailoption toOn.

cycle your PC, and attempt to execute the Mail and Calendar app again.

The software should work properly, otherwise, like move on to the next method.

click Windows Store Apps and choose Run the troubleshooter

Step 1: TypeTroubleshoot settingsin the Search bar and go for the appropriate result in the list.

Step 2: ChooseAdditional troubleshootersin the right column.

Step 3: In the following window, scroll down to find and clickWindows Store Apps.

copy and paste sfc/scannow and press Enter

Then chooseRun the troubleshooter.

Step 2: In the pop-up UAC prompt, choose theYesbutton to continue.

Step 1: Typewsreset.exein the Windows search bar and pressEnter.

type three commands and hit Enter

Do check whether the problem that the Mail and Calendar app wont open is resolved.

In Conclusion

There are 6 methods to fix the Mail and Calendar app wont open issue.

you might choose the appropriate one to fix it.

We hope that at least one of these solutions will help you.