Apps keep pinning themselves on startup to the task bar, how do I stop this?

This solved the problem for me.

https://superuser.com/questions/1460439/icons-automatically-pinned-to-taskbar-after-every-reboot-in-windows-10

C:\Users(youruserhere)\AppData\Local\Microsoft\Windows\Shell\LayoutModification.xml

Looking for this line

CustomTaskbarLayoutCollection PinListPlacement="Replace"

I did a ctrl+f and searched "custom"

Found the lines with xbox app and dragon center app

Removed them and saved xml

Rebooted and they didnt show back up. 

I saw this in the LayoutModification.xml file 

<CustomTaskbarLayoutCollection>

    <defaultlayout:TaskbarLayout>

      <taskbar:TaskbarPinList>

        <taskbar:UWA AppUserModelID="9426MICRO-STARINTERNATION.DragonCenter_kzh8wxbdkxb8p!App" /> 

        <taskbar:UWA AppUserModelID="9426MICRO-STARINTERNATION.CreatorCenter_kzh8wxbdkxb8p!App" />

        <taskbar:UWA AppUserModelID="Microsoft.GamingApp_8wekyb3d8bbwe!Microsoft.Xbox.App" /> 

      </taskbar:TaskbarPinList>

    </defaultlayout:TaskbarLayout>

 </CustomTaskbarLayoutCollection>

removed 

 <taskbar:UWA AppUserModelID="9426MICRO-STARINTERNATION.DragonCenter_kzh8wxbdkxb8p!App" /> 

and 

<taskbar:UWA AppUserModelID="Microsoft.GamingApp_8wekyb3d8bbwe!Microsoft.Xbox.App" /> 

this fixed the re-pin taskbar problem with the dragon center and xbox app store.

The OS should honor the unpin command permanently and not require hand editing an XML file buried in the user AppData folder to permanently unpin an app. I wonder why it is so difficult to unpin these specific two apps from the taskbar... oh wait money, money is why. Having to do this Internet search and then hand edit of a file to remove these apps (that I never pinned) ensures I never use either of these apps unless I am forced to. It also indicates to me that no one would ever use either of these apps unless they were obnoxiously unremovable from the viewing area of the computer thus in front of the user without their consent continuously... like an advertisement. Surprised Edge wasn't also perma-pinned to the taskbar.

This solved the problem for me.

https://superuser.com/questions/1460439/icons-automatically-pinned-to-taskbar-after-every-reboot-in-windows-10

C:\Users(youruserhere)\AppData\Local\Microsoft\Windows\Shell\LayoutModification.xml

Looking for this line

CustomTaskbarLayoutCollection PinListPlacement="Replace"

I did a ctrl+f and searched "custom"

Found the lines with xbox app and dragon center app

Removed them and saved xml

Rebooted and they didnt show back up. 

Thank you!!!! I knew was something like this just didn't know where to start looking.

Hi, It keeps asking me what app I want to open it with, what do I open it with? It's suggesting Microsoft XML handler, is that correct?

This solved the problem for me.

https://superuser.com/questions/1460439/icons-automatically-pinned-to-taskbar-after-every-reboot-in-windows-10

C:\Users(youruserhere)\AppData\Local\Microsoft\Windows\Shell\LayoutModification.xml

Looking for this line

CustomTaskbarLayoutCollection PinListPlacement="Replace"

I did a ctrl+f and searched "custom"

Found the lines with xbox app and dragon center app

Removed them and saved xml

Rebooted and they didnt show back up. 

Thank you!!!! I knew was something like this just didn't know where to start looking.

yes actually I did this and worked for me.