Windows 10: I have multiple instances of ieDiagCmd and ie4Uinit.exe scattered about in different...

I have multiple instances of ieDiagCmd and ie4Uinit.exe scattered about in different directories, including Internet Explorer, should I be concerned, please advise.some of the locations:C:\Windows\WinSxS\amd64_microsoft-windows-ie-setup-support_31bf3856ad364e35_11.0.26100.3912_none_a5156f42381c7196C:\Windows\WinSxS\amd64_microsoft-windows-ie-setup-support_31bf3856ad364e35_11.0.26100.4202_none_a560205237e491cf\rC:\Windows\WinSxS\amd64_microsoft-windows-ie-setup-support_31bf3856ad364e35_11.0.26100.4202_none_a560205237e491cfC:\Windows\System32C:\Windows\WinSxS\FileMapsinfo on binary hacks and att

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Multiple instances of Windows Explorer

So in the Processes tab, under Apps, however many Windows Explorers I actually have open is however many it will list, and expanding will list the specific folder that is open, there is no problem there. The problem is when you scroll down to Windows processes, that's where all the multiple instances are. Right now it's only showing 7 but that is because I restarted my computer a couple hours ago, I've counted as many as 40+ before.

 

Why are multiple instances of Windows popping up?

We had an employee go through some old personal drives on a work computer and ever since he did that it's asked us to choose between 5 different Windows 10 instances every time the computer booted up. I stopped it from asking us every time by going into "This PC > advanced system settings>startup and recovery>settings" and unselecting "time to display listed operating systems". However when I went to choose an operating system from the pull down menu it showed 5 instances of Windows 10. It's not a huge deal because I got it to stop asking us to choose one every time we booted the computer up, but I'm curious as to why it would be showing multiple instances of Windows 10.

 

Windows 10 Virtual Desktops and multiple program instances

I'm having an issue with the new Virtual Desktops in Windows 10. For example:

1. From Desktop 1, double click the file "test1.xlsx". This will open the file in a new instance of Excel (specifically 2010, in my case), on Desktop 1.
   
2. From Desktop 2, double click the file "test2.xlsx". This will change the desktop to Desktop 1 and open the file in the same instance of Excel as from step 1.
   

I've found this to also be true with Notepad++, so my guess is that this behavior occurs with any program that opens multiple files in a single instance. However, these are the two programs I generally use in this way.

I've found a number of ways to disable DDE for Excel, but this isn't what I want to do. If I open a second file from a desktop that already contains an instance of the program that should open it, I want to use that instance.

I've found manual ways of opening a second instance, moving it to the correct desktop, and then opening the file in that instance. However, the process is slightly different for each program and overall is, at best, clunky. Not to mention that now a third file will open in the most recently used instance, and not necessarily the correct one, requiring the whole process to start over again.