To fix the Steam Deck cloud sync error, ensure that SteamOS and your games are updated to their latest versions. Simply restarting your Deck often does the trick.

Is your Steam Deck not syncing to cloud? Several factors can cause this issue such as software glitch, steam server issue, outdated Steam Deck, or corrupted Steam library folder. To fix this Steam ...

How to fix Baldur’s Gate 3 “game is currently syncing” saving issue We’ve found that Baldur’s Gate 3’s saving issue is mainly caused by cloud-saving malfunctions, which Larian have ...

However, the Cloud Sync feature on Steam Deck does not always work as expected. Sometimes, you get an error, hindering you from syncing your game info among the devices you play games on.