We are aware of Login issues impacting RuneScape as of 12:10 Game Time. The team are on it and working to resolve this as quickly as possible.

As of 12:33 Game Time, and after allowing time for services to come back online, we can now confirm this is resolved. Rollbacks of the last 15 minutes will have occurred. Thank you for your patience and understanding and we apologize for any inconvenience caused.