The Next button is available only if all check results are successful, or if failed checks do not block installation.

Use the Show details button to display a summary of rules and scan results. The Status column at the right-hand side of the scan results shows the status of each item. Click the status for an item to view details.

The following table describes check parameters for the SCC, requirements, and resolution to blocking issues.

Check item	Description	User action
RebootRequiredCheck	Checks if a pending computer restart is required. A pending restart can cause Setup to fail.	A computer restart is required. You must restart this computer before installing SQL Server.
OsVersionCheck	Checks whether the computer meets minimum operating system version requirements.	Ensure that the operating system version meets the minimum requirements for this product. For more information, see Hardware and Software Requirements for Installing SQL Server 2008 R2.
ThreadHasAdminPrivilegeCheck	Checks whether the account running SQL Server Setup has administrator rights on the computer.	Ensure that the account that is running SQL Server Setup has administrative rights on the computer.
WmiServiceStateCheck	Checks whether the WMI service is started and running on the computer.	Ensure that the Windows Management Instrumentation (WMI) service is running.
SSMS_IsInternetConnected	Checks to see if the computer is connected to the Internet. SQL Server Management Tools that are based on .NET Framework technology must check the certificate revocation list on startup.	Ensure that the computer is connected to the Internet.
FacetDomainControllerCheck	Checks whether the computer is a domain controller. Installing SQL Server 2008 R2 on a domain controller is not recommended.	Ensure that this computer is not a domain controller. For more information, see Security Considerations for a SQL Server Installation.
FacetPowerShellCheck	Checks whether Windows PowerShell is installed. Windows PowerShell is a pre-requisite of SQL Server 2008 R2 Express with Advanced Services.	For installations of Microsoft SQL Server 2008 Express with Advanced Services, ensure that Windows PowerShell is installed.
FacetWOW64PlatformCheck	Determine if the Setup program is supported on the operating system platform.	This rule will block unsupported installations on the 64-bit platform. For more information, see Hardware and Software Requirements for Installing SQL Server 2008 R2.
PerfMonCounterNotCorruptedCheck	Checks if existing performance counter registry hive is consistent.	Ensure that the performance counter registry hive is consistent.
SqlUnsupportedProductBlocker	Checks whether SQL Server 7.0 or SQL Server 7.0 OLAP Services is installed.	Remove SQL Server 7.0 or install SQL Server 2008 R2 on a different computer.

See the following topics for scenario-specific Setup rules:

• Installation Rules
  
• Upgrade Rules Check
  
• Edition Upgrade Rules
  
• Uninstallation Rules
  
• Prepare Image Rules
  
• Complete Image Rules