WinCC Explorer, server not available.

WinCC V7: Tip#1 WinCC Explorer - server not available. How to fast solve this problem in WinCC V7?

Check :

1. SQL instance (WinCC) if running

2. Set AUTO mode instead of manual

3. Start SQL Server (WinCC)

ps. in more problems go to users/groups in control panel and find if you have enough rights to use SQL Server.