# Stop QuickBuild server of previous version, you do not need to stop agents since they will be auto-upgraded after server is upgraded.
# Install new version of QuickBuild to a separate directory following [server installation guide|Server Installation Guide].
# Open a command line window, and switch to the _bin_ sub directory under the *new version*'s installation directory. Run the migrate command to migrate from previous QuickBuild version. On Windows platform, the command is _migrate.bat <install directory of previous QuickBuild version>_, and on unix platforms, it will be _migrate.sh <install directory of previous QuickBuild version>_.
# Install new version of QuickBuild to a separate directory following [server installation guide|Server Installation Guide].
# Open a command line window, and switch to the _bin_ sub directory under the *new version*'s installation directory. Run the migrate command to migrate from previous QuickBuild version. On Windows platform, the command is _migrate.bat <install directory of previous QuickBuild version>_, and on unix platforms, it will be _migrate.sh <install directory of previous QuickBuild version>_.