After installation of Patch it's displaying message "Some of the update failed to install properly". Although which files I want to replace, it's already replaced with this patch. But at last it is showing this message.
Please generate a verbose log while installing the patch using the following command:
msiexec /p patch.msp /L*V C:\patch.log
Send the log file and the AIP files for the Target and Upgraded MSI packages to support at advancedinstaller dot com in order to investigate this issue.
This thing happens when I used Auto Update feature. Through my application it detect that Update[Patch] is available. After installation of Patch it's displaying message "Some of the update failed to install properly".
If i run patch separately it's not showing any message.
This happens because either the patch is not applied correctly or after the patch is applied the "Installed Detection" condition is not met.
Note that the updater needs a file version or registry key detection criteria, therefore in the second msi package you should either create a registry key or change the version of an exe file included in your package.