En Sql Server 2008 R2 Standard X86 X64 Ia64 Dvd 521546iso: Patched

If your patched version has a different checksum, it is an exact Microsoft original.

Using SQL Server 2008 R2 in a production environment is strongly discouraged due to the risks associated with unpatched security vulnerabilities. However, some organizations with Volume Licensing agreements may have access to , which provide critical security patches for up to three years after the end of extended support (until 2022). If your patched version has a different checksum,

Pre-patched versions reduce the risk of installation failures due to missing pre-requisites. Installation Guide: SQL Server 2008 R2 Standard If your patched version has a different checksum,

SQL 2008 R2 requires .NET 3.5 SP1. On newer Windows versions, this must be enabled via "Turn Windows features on or off." If your patched version has a different checksum,