Windows 10: Can't add Gmail account to Calendar app in Windows 10 - Error 0x8007042b

I've been trying to get my calendar to function correctly by adding a gmail account, but I get the error message above in the title when I click Settings > Manage Accounts > Add Account > Google. I've tried looking around and managed to add an account via the IMAP workaround, but the calendar didn't work with that, only the mail app. Is there any way I can get my gmail account on the Calendar app up and running?

:)

 

0x8007042b error when adding yahoo or gmail accounts to Windows 10 Mail and Calendar app

There's a similar thread from 2015 How to solve error 0x8007042b while connecting a Google account on Windows 10? here but none of the answers worked. The manual method of adding accounts doesn't work with Calendar, which for some strange reason is bundled with the Mail app!

My current build is:

This is what I've tried so far:

1. That thread at the top of this post.
   
2. Created a system restore point.
   
3. Opened Microsoft Store → Settings → unchecked Update apps automatically so it won't automatically add the app upon the next restart. Done this prior to doing anything as Windows installs the Mail and Calendar app the first chance it gets.
   
4. Removed any existing accounts that were added manually to the Mail or Calendar apps.
   
5. Allowed windows full access to my location.
   
6. Signed into my Microsoft account → cleaned out all items from the screenshot below at this address https://account.microsoft.com/privacy/activity-history.
   
   
   
7. In PowerShell as admin.
   
   • WSReset.exe
     
   • Get-AppxProvisionedPackage -Online | Out-GridView -PassThru | Remove-AppxProvisionedPackage -Online
     and highlighted the microsoft.windowscommunicationsapps item and clicked OK to delete it.
     
   • wmic useraccount get name,sid which returned a formatted number beside my username: x-x-x-xx-xxxxxxxxxx-xxxxxxxxx-xxxxxxxxxx-xxxx.
     
8. In Registery Editor as admin.
   
   • Navigated to the key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Appx\AppxAllUserStore\x-x-x-xx-xxxxxxxxxx-xxxxxxxxx-xxxxxxxxxx-xxxx and deleted that associated number found above.
     
9. With RegScanner in admin
   
   • Searched for entries associated with Mail and Calendar which have the PackageFamilyName name: microsoft.windowscommunicationsapps_8wekyb3d8bbwe and deleted any of them.
     
   • This left me with these which could not be removed. Their paths vary for:
     
     • Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModel\StateRepository\Cache and this entry HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\BackgroundModel\EmptyHostDisallowList microsoft.windowscommunicationsapps_8wekyb3d8bbwe REG_DWORD 0x00000001 (1) 19/03/2019 04:53:42 4.
       
     • See screenshot below of any registry items found with the keyword search used microsoft.windowscommunicationsapps.
       
       
       
10. Restarting the PC, then adding the app back in, in the Microsoft store.
    
11. Still getting error 0x8007042b when I try to add either Yahoo or Google accounts to either Mail or Calendar.
    
12. This leads me to believe that the cache registry folder in step. #9 above is the culprit which cannot be deleted, even when I tried using Registry DeleteEx.
    
    • FYI, I have even user ids inside the folders here Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModel\StateRepository\Cache\User which no longer exist.
      

 

error 0x8007042b when adding a Yahoo Mail account to MS Mail App

I went this route and added passwords for yahoo mail. I might try this method above to get gmail to buck up! *Tongue

@Bastet, this is probably what you were referring to the whole time.


YAHOO MAIL FIX
2FA needs to be enabled which it already was and just follow these steps below.

1. In yahoo mails account security, click on manage app passwords.




2. After selecting other app and entering the new app name in the text box




3. Now, in Windows 10 mail app, add this type of account.




4. In Windows 10 mail app, enter your details and the password generated by step 2.




Fully functional mail app again.



GMAIL FIX

Now similar steps to setting up Gmail. Here I'll only go through the Gmail steps as Windows Mail App setup is the exact same.

Follow this jpeg below, all steps are merged as there's a 5 attachment limit.





- - - Updated - - -

I've edited it to show the solution for Gmail also.

 

error 0x8007042b when adding a Yahoo Mail account to MS Mail App

Yes, once 2-factor authentication is enabled you should then create the app specific password & enter it instead of the account password.