The disk doesn't have enough free space to install. Please free up space.
How to resolve issues with slow patch downloads.
Problems with patching may be resolved by disabling the read-only setting on system folders.
Unable to install Battle.net Application after downloading from the website.
The Battle.net desktop app is trying to connect to an invalid or nonexistent server.
The Battle.net desktop app is trying to connect to an invalid or nonexistent server.
Troubleshooting steps for disconnections in StarCraft II