(WSO) 'Failed to connect to update server'' error message occurs.

Symptom : 'Failed to connect to update server'' error message occurs during internet update after World Skill Olympics

Solution : 

Please follow the two steps as the below.

1) Try Server reset

Path : Configuration > Server > Reset > Save

2) Force Stop GDS Smart.

Path : Settings > Apps > GDS Smart  > Force stop

After that, start GDS Smart to perform the internet update.