When you install Security Content Update (SCU) on CCS 11.1.x, CCS 11.5.x, or CCS 12.x, some .dll files in the installation package are not replaced. The error details are visible only in the installation logs, but no error message is displayed on the installer during the installation process.
The replacement of the updated .dll file fails only if the .dll file is used by another process at the time of SCU installation.
From SCU 2017-3 onwards, if a .dll file is not replaced successfully during SCU installation, the following error message is displayed:
Error while copying the file <filename>. Refer to the installation logs for details.
The file can be located at the temporary location: <file location>. Copy the file, and then delete it from the temporary location.
DLL file installation error
Moreover, the Undeployed Files folder is created at the following location:
<CCS Installation Directory>\Symantec\CCS\Reporting and Analytics\UnDeployedFiles
This folder contains the .dll files that are not replaced because they are in use by another process during SCU installation. The folder also contains the Details.txt file. The Details.txt file provides the following information:
You must manually replace the .dll files at the respective locations. To replace the undeployed .dll files, do the following: