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StephenWhiteD3G's avatar
StephenWhiteD3G
Iron Contributor
Jun 15, 2020

Windows 10 2004 - MSIX Not Updating -Please check whether the Msixvc support services are installed.

We use MSIX for one of our LOB applications at my organization. We recently updated some machines to Windows 10 2004 to test it before rolling it out to the rest of the company. One problem we ha...
20H1
MSIX
marcinotorowski's avatar
marcinotorowski
Brass Contributor
Jul 12, 2020

davidanthoff 

App installation failed with error message: error 0xC00CEE23: The XML in the .appinstaller file is not valid: Line 26, Column 7, Reason: '>' expected. (0xc00cee23)

 

I have seen this error a few times, though not regularly nor attached to any reproducible condition I could imagine of. In my case it had nothing to do with the hosting server, the XML file of .appinstaller definition nor the application itself, which were always OK (correct downloads, MIME types, validated XML, working manual installation etc.). 

 

For me, sadly the "simplest" workaround always did the trick - the problem was gone after rebooting the machine, no other changes done. I would say this could have been a caching issue, if not for the fact that some deliberate changes on the live .appinstaller content were reflected by the messages of the appinstaller window (changing line numbers). Anyway, I am curious to see if this behaves like this on your machine(s) - if the reboot works then there are at least two of us with exactly the same issue 🙂

StephenWhiteD3G's avatar
StephenWhiteD3G
Iron Contributor
Jul 13, 2020
That's pretty much what has been happening on my end. Seems to start happening as soon as you install an update with app installer. Like you said, after that it is like something gets cached and/or not properly cleaned up and then the only option is to restart Windows to get it to do whatever it needs to do to clean up the state.