Win10 mail and calendar synchronization error 0x80c8043e how to do

An official Microsoft engineer gave a solution in the Microsoft community, but some users do not respond very well. Non-official users have started to solve the problem spontaneously, in a simpler way.
1.Resolved by Powershell (official)
After entering Powershell in Cortana search bar, right click on the first result and select “Run as administrator”, then enter the following command and press Enter: Br>Get-appxprovisionedpackage –online |  Where-object {$_.packagename –like “*windowscommunicationsapps*”} |  Remove-appxprovisionedpackage –online

After the run, re-download and install the mail and calendar app in the store. Of course, if this method doesn't work, you can try the following “civil program”.
2, uninstall KB3081436 update (user spontaneous)
This patch is the second cumulative update received by the official version of win10, used to fix various problems in the system.
But the patch itself has caused a lot of trouble for some users, for example, it can't be installed, or after the installation, <; extra-segmentation & quoquo;, the 0x80c8043e error mentioned in this article is one of them.
It should be noted that this security update can be uninstalled without uninstalling. Although you may have installed the third cumulative update patch KB3081438 recently released, there are still some risks in uninstalling the patch.
Especially if your third update fails to install, it's best to try not to solve the synchronization problem of mail and calendar in this way.

Uninstallation method is very simple, click Settings & Rarr; Update & Security & Rarr; Advanced Options & Rarr; View Update History & Rarr; Uninstall Update, then find KB3081436 in the pop-up window, double-click to uninstall.
A lot of users report that the second method works. If you encounter this problem, you can try it.