Forum Discussion
MECM MSIX Application Creation Error
Larry,
This sounds unusual.
Microsoft doesn't seem to be reacting to posts here much right now, so if you want to reach out to me offline I can provide another set of eyes. mailto:tmangan@tmurgent.com
Many thanks for your reply Tim. This error has cropped up elsewhere online, but not in the context of MSIX. It looks like I shall have to got through the package (in particular the assets) with a fine-toothed comb and look for special characters in filenames, etc.
- Apr 28, 2026
Crazylarry​ Thinking about your error on the plane ride home yesterday.
If the issue is syntax versus schemas in the AppXManifest (for example a protocol handler uses a URI), then an installation error will generate an Event Log entry in the Microsoft\Windows\AppXPackagingOM operational log that will have the detail, including the AppXManifest line number.
- CrazylarryApr 29, 2026Copper Contributor
The strange thing is that the MSIX installs fine and the app works no problem. But MECM doesn't like it. I found the problem anyway: brackets in folder names, which several of the Adobe Creative Cloud apps contain. This means that those apps are not suitable for MSIX deployment using MECM unless they are wrapped in a script.