You can find all service packs (SPs) on the SAP Crystal Reports Downloads Wiki.
While various versions are compatible, Service Pack 16 (SP16) was the first to officially support Visual Studio 2015. However, modern service packs like SP31 or SP32 are backward compatible and recommended for the latest bug fixes.
For the most current installers, visit the SAP Software Downloads Portal. Select "SAP Crystal Reports, version for Visual Studio" from the product dropdown to view available packages. Installation Guide for Visual Studio 2015
You can find all service packs (SPs) on the SAP Crystal Reports Downloads Wiki.
While various versions are compatible, Service Pack 16 (SP16) was the first to officially support Visual Studio 2015. However, modern service packs like SP31 or SP32 are backward compatible and recommended for the latest bug fixes.
For the most current installers, visit the SAP Software Downloads Portal. Select "SAP Crystal Reports, version for Visual Studio" from the product dropdown to view available packages. Installation Guide for Visual Studio 2015