Forum Discussion
MECM MSIX Application Creation Error
Apologies if this needs to go into the MECM forum.
I receive the following error message when trying to import an MSIX into MECM: 'Error: Part URI is not valid per rules defined in the Open Packaging Conventions specification'. The MSIX is for Adobe InDesign 2026. I have successfully created MSIX packages for other Adobe Creative Suite products and imported them into MECM. I have been through the manifest for the InDesign MSIX I created, the file system, the metadata (such as package name) and can see nothing that would trip it up. I have also looked for any path lengths over 255 and found none. The only thing I found which I think may be a problem is in the content_types.xml - a tilda in the application extension entry:
<Default Extension="xml~" ContentType="application/octet-stream" />
As usual, there is not much online. I have skimmed through the OPC specification, but can see nothing about limitations. Have anyone else come across this problem?
4 Replies
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.
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.
