Game Failed to launch due to an error on our side, try again later [ Edited ]

[Starbuck057]

click the manage button next to the play button and then view properties and the type in -CnCRemastered in the advanced launch box, hit save and you can play the game 

[bleearghh]

For those seeking further details on this issue or wider issues launching C&C Remastered, see the below thread:

https://answers.ea.com/t5/Command-Conquer-Games/Command-and-Conquer-Remastered-Failed-to-launch/td-p...