Windows 10 Mail app stops recieving mail as it arrives.

hTconeM9user said:

Have you used the link app which will set up another inbox which you can name whatever you want to.
Then all your mail if there is any go into one inbox
I have mine set up like that and I find it most useful

Not sure if you mean linked inboxes in Windows Mail app or a separate app, I use linked inboxes in the Microsoft mail app now and all my mail goes there. Normally the 2 hotmail accounts sync automatically as new mail arrives. When things go wrong, one or both of the hotmail accounts stops syncing as new mail arrives and I have to click the sync this view button to sync manually. If there is new mail it arrives in my linked inbox. Not a huge deal, manual syncing is just a nuisance and I just like things to work as they are supposed to.

the account I log in with stopped getting mail automatically again, took around a day this time. My other hotmail account and my gmail account continue to work properly. Closing/opening Mail doesn't fix, rebooting doesn't fix but turning email sync off and on again does make it work again. If you link inboxes, the account will have to be linked up again.
I hope this helps someone else this happens to. Not a fix but a workaround until, hopefully, Microsoft fixes it.

I use the mail app with 4 accounts. 2 are sync 15 min the others 2 hours. I have had no problems yet. I just wished it had more features.

I found an app called PingMail. I have it set to send a test mail to my logged in Hotmail account every hour from my Gmail account. So I at least know it when the Hotmail account stops syncing.The mails were coming as they arrived on the Hotmail server without issue for about 2.5 days, then it suddenly stopped. This time I'm going to set the account to sync every 15 minutes to see if it stops again. My other Hotmail address continues to work properly.

Looks like I found a solution for my problem. It had turned into a real nightmare. The Mail app eventually began to drop my hotmail accounts all together, while leaving my Gmail alone. I tried resetting the app to no avail. Running the Windows store apps troubleshooter tells me the Windows Store Cache May Be Damaged - Not fixed I haven't found a solution for that. I tried resetting the Windows store but that didn't fix it.
During the course of trying things I decided to reset Windows 10 on my Dell Inspiron laptop. What a mistake that was. It stuck at 93% for many hours with no sign of advancing. I rebooted it, the program said it reversed the changes but there was tons of stuff missing and messed up. I tried to recover to the last restore point. When it went through and rebooted, it didn't. Not even to the Dell logo. Somehow the bios got corrupted. After many hours of research I figured out how to force a rewrite of the bios from a dos bootable memory stick. I restored the system from a hard drive image backup, thankful the machine was working again and for the first little while it seemed that the Mail app was working fine. That didn't last. What ever was causing the problem was obviously on my backup.
After some more research I found this guide to uninstalling windows components through the PowerShell. How to uninstall default apps in Windows 10 - CNET
I used the command line Get-AppxPackage *windowscommunicationsapps* | Remove-AppxPackage to uninstall the Mail and Calendar apps. Then I went to the Microsoft store and reinstalled and set up the Mail and Calendar apps from there. It's only been a day but so far it has been working fine again. Sure would be nice if Microsoft would allow us to uninstall and reinstall their apps in situations like these instead of jumping through hoops to get it done.
I hope this is a help to others that experience the same difficulties.

That's what I said in post #6 on the directions from MS.