Do any of the Collabrix installations require a reboot?
No, unless the setup program encounters locked components that it needs to update to complete the installation process. 1) Collabrix could be running while trying to reinstall or update Collabrix – Windows installer service will report that you need to close Collabrix to prevent a reboot. 2) A reboot is required if any locked files (or files that are in use) which need to be updated are encountered such as shared components. If it is not possible to stop the process that has the files locked, the machine will require a reboot in order to update these files.