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Release Notes - EPiServer CMS 5 R2 SP2 RC

This document contains notes about the changes in EPiServer CMS 5 SP2 RC. For release informaton regarding EPiServer CMS 5 R2, please refer to the Release Notes for EPiServer CMS 5 R2 .

Note that this is a release candidate. Please report any issues via the Developer Fourm on EPiServer World.

Deployment Center

As with EPiServer CMS 5 R2 SP1, installation and upgrade of EPiServer CMS 5 R2 SP2 RC is done with EPiServer Deployment Center. This is slightly different compared to EPiServer CMS 5 R2, which was installed with EPiServer Installation Manager. If you are upgrading from EPiServer CMS 5 R2, further information about Deployment Center can be found in the EPiServer CMS Installation and Deployment System Overview

New and Enhanced Functionality

EPiServer CMS 5 R2 SP2 RC mainly contains bug fixes and no new functionality. A list of issues that have been solved in this release is available on EPiServer World. (partner access required).

Update in File caching in EPiServer 5 R2 SP2


The ASP.NET output cache for files is now turned off by default in the EPiServer CMS 5 R2 SP2 release. Please note when upgrading to EPiServer 5 CMS R2 SP2 this update may require consideration.

In the EPiServer 5 R2 SP2 release a new attribute has been added on staticFile this is called enableOutputCache - turning this attribute on enables the output caching of ASP.NET files.


In versions EPiServer 5 CMS R2 and EPiServer 5 CMS R2 SP1 the output cache causes a problem where files were not getting updated until the server cache expires. (This only happened for files where expirationTime in web.config was set to a positive value - a workaround for this was to force cacheControl to “private”, or set expirationTime to a negative value).

For further background information see the post - Files being cached too aggressively in R2.

Further Information:

Http Caching strategies: VPP Files
Files being cached too aggressively in R2
Performance tweak Optimizing StaticFileHandler in EPiServer CMS 5 (part 2)
Performance tweak: Optimizing StaticFileHandler in EPiServer CMS 5 (part 1)
Some recommendations for cache configuration in IIS 7:
Configuring cache expiration on IIS 7.

Improved Web Browser Support

EPiServer CMS 5 R2 SP2 RC now has full support for Internet Explorer 8 as a browser for editing.


Migrating EPiServer CMS 4.62 Sites to EPiServer CMS 5 R2 SP2 RC

To migrate an EPiServer CMS 4.62 Web site to EPiServer CMS 5 R2 SP2 RC, it is first necessary to migrate to EPiServer CMS 5 R2 with EPiServer CMS Migration Tool After that upgrade can be done to EPiServer CMS 5 R2 SP2 RC by following the relevant installation instructions.