Known bug in RC1 (release candidate 1)
If you’re upgrading from either Synergy 1 or the alpha/beta version of Synergy 3, then please remove any existing Synergy installations first and reboot your computer before installing Synergy 3 RC1. Our development team is currently working on this issue and will be releasing a new version soon (RC2) to ensure that upgrades are painless in future.
Synergy 3 is new software (launched on 31st May 2023), so please accept our apologies for any inconvenience and thanks for your patience while we solve these early post-launch problems. If you need help, please contact our technical support team who work closely with the development team to solve customer problems.