Error on startup from launcher

Hi over the last month or so I haven’t been able to play SC. Every time I launch the game I receive an error message before the game start screen even appears. I’ve tried to launch SC from Asia and Americas no joy. I’ve tried uninstalling and reinstalling no joy. Besides installing Steam recently, or automatic Windows updates, there have been no other changes to the pewta. It was working fine for quite a long time before this. I’m currently running Windows 10 Home 64 bit on an Acer Laptop with 8GB DDR4 RAM. Processor is an AMD A9-9410 2.90ghz. 128GB SSD and a 2TB HDD. The most recent error message was C688CD05-CEC9-4FD8-B5A2-3ED9C139E3A4. Please help, i want to play StarCraft in Pandemic lockdown with my awesome friend Kingsook!!