After an upgrade the file C:\Program Files (x86)\CA\DSM\Agent\OSConfig.xml is not updated.
Client Automation - All Versions
A fix including the file OSConfig.xml has been applied before upgrade.
OSConfig.xml file is not updated because its "creation date" is lower than "Modified Date".
Execute following command prior the upgrade :
powershell.exe -ExecutionPolicy ByPass -Command "$(Get-Item 'C:\Program Files (x86)\CA\DSM\Agent\OSConfig.xml').creationtime=$(Get-Item 'C:\Program Files (x86)\CA\DSM\Agent\OSConfig.xml').lastwritetime"
This command sets the creationtime of file C:\Program Files (x86)\CA\DSM\Agent\OSConfig.xml same as lastwritetime.
And then new file OSConfig.xml will be copied during upgrade.