Software Update Cycle runs to install APSB Bulletins from Adobe; found they fail and continue to reschedule.
Found the Software Update fails to run manually as well with Exit Code 1603, and has also found to request the .msi version of the Software Update.
Patch Management 7.5.x, 7.6.x & 8.0.x
Patch Management install throws: Exit Code 1603
Manual install throws popup: The feature you are trying to use is on a network resource that is unavailable.
Additional popup: Requesting .msi executible be utilized for updating.
Confirmed the targeting Rule Logic was in order.
Cause 1: Found that Adobe being installed with 'Disable Updates' & 'Disable Services' being configured can cause the issue.
Cause 2: Found the issue was not caused by any processes owned by Patch Management, for the environment utilized network installation, or alternative installation methodology for Adobe Acrobat Software as included in the deployed Client image, and the Software Update Cycle was unable to execute locally due to the installer being unable to find the initial install path. The .msi appears to be requested to lay down the software in the current location.
Moreover, regarding the Adobe Reader updates; the .msi is generally a full installer. Depending on the version of the .msp, most .msp installers are incremental updates and are used for updates. Patch Management Solution would only offer the .msi for normal patch updates when the .msp is not available.
Unfortunately, there is no current plans on changing this functionality.