Reference: Sitefinity CMS and .NET framework compatibility
The following article lists the compatibility of Sitefinity CMS releases with Microsoft .NET framework versions.
|Sitefinity CMS release
|12.0 to 13.0
|11.0 to 11.2
|10.0 to 10.2
|4.0 to 10.0
IMPORTANT: When you are upgrading Sitefinity CMS, you must upgrade your Microsoft .NET framework to the respective version.