Installation and Upgrade > Installation and Configuration Guide > Planning a Solution Installation > File Server Remote Site Pre-Installation Steps > Critical Patch Sets
  
Critical Patch Sets
CPS updates for a remote File Server are required when CPS’s are applied to the master site. The updates are delivered by a file named CcsDsu.zip that contains all the necessary updates for a CPS. If you are making a third party update as a result of a CPS update you must manually download the file server installer bundle zip, extract it and launch PSI in it to complete the update.
If the autoManageCCS property in the wt.properties file is set to true, this ZIP file is automatically downloaded to the following location on the remote File server when the configuration is broadcast: <Windchill>/CCSTools/update.
If the autoManageCCS property is set to false, you must manually transfer this file to the remote file server. The ZIP file resides in the following location on the master site <Windchill>/CCSTools/update.
After the ZIP file is downloaded to the appropriate location, you must restart Windchill on the File Server to apply the update.