How to Install Exchange Online PowerShell Module?.Switch between Document Libraries with Document Library Dropdown Menu in SharePoint Online and OneDrive.How to Add a Column to List in SharePoint Online Using PowerShell?.Microsoft Teams: Change Meeting Recording Expiration Policy.SharePoint Online: How to Enable 'View in File Explorer' in Microsoft Edge?.Connect to SharePoint Online using Azure AD App ID from PowerShell.How to Disable Built-in Site Templates in SharePoint Online?.SharePoint database(s) may be in Offline mode, bring them Online from database properties!.

Simply a Server Reboot also works sometimes! It also occurs when your service account password expires or account is locked. The SharePoint service account used in App Pool doesn’t has enough access to SQL Server! Make sure your AppPool account has: Security Administrator & Database Creator rights on SQL Server.Also make sure no firewall rules are blocking your connections. Make sure your SharePoint servers are able to communicate with SQL Server by pinging/NSLookup. Network connectivity issues between SharePoint Web/App Servers and Database Server.Check database connection information and make sure the database server is running” error in SharePoint, such as: Go to Run > Services.msc > start the MSSQLServer Service!īut wait! There could be some other reasons for “Cannot connect to the configuration database” or “Unable to connect to database. You can do the same with the Services console. Right click on “SQL Server (MSSQLSERVER)” Service which is in “Stopped” State, and Start it.(In another case, SQL Server service stopped due to disk space issue!). Reason: SQL Server services were stopped during a patch installation. Problem: Users received “Cannot connect to the configuration database” error when trying to access SharePoint sites!

Configuration registry database corrupt