You open the ControlUp console and fail to connect to your managed computers.
You receive an error: " Failed to replace agent files to match version X"
The ControlUp console is trying to match the versions of the Console and agents.
It fails to upgrade the agents because they were installed via MSI installer.
If the agent is installed via agent MSI, you have to remove the older version with the same MSI package or from the add\remove programs before you install a newer version.
Once the new version is installed, if the versions match, the Controlup console will be able to connect to the agents.
If you're still having an issue with removing the agent, please refer to the following article -> I can't remove the ControlUp agent (MSI Installed)