Alexander Haneng
Sep 21, 2011
  4578
(0 votes)

License error when upgrading to EPiServer CMS 6 R2

If you are in the process of upgrading your site from CMS 6 to CMS 6 R2 be aware that some license keys for EPiServer CMS 6 won’t work with CMS 6 R2!

The reason is that the license is locked to version 6.0-6.0.9999, while CMS 6 R2 is version 6.1.379.0.

It is nothing a new license file from EPiServer won’t fix, but it is good to know about in advance before you deploy to production.

 

From on of my license files:

<Restriction>
<VersionRestriction From="6.0" To="6.0.9999" Type="EPiServer..."/>
</Restriction>

 

Thanks to @epibjorn who first brought it to my attention in a tweet.

 

Posted by

Sep 21, 2011

Comments

nz.piquet@gmail.com
nz.piquet@gmail.com May 21, 2012 10:59 PM

Thanks for the post - found it when searching AFTER deploy to production. Nasty as devel and test environments licensed differently. :-(

Please login to comment.
Latest blogs
AEO/GEO: A practical guide

Search changed. People ask AI tools. AI answers. Your content must be understandable, citable, and accessible to both humans and machines. That’s...

Naveed Ul-Haq | Feb 17, 2026 |

We Cloned Our Best Analyst with AI: How Our Opal Hackathon Grand Prize Winner is Changing Experimentation

Every experimentation team knows the feeling. You have a backlog of experiment ideas, but progress is bottlenecked by one critical team member, the...

Polly Walton | Feb 16, 2026

Architecting AI in Optimizely CMS: When to Use Opal vs Custom Integration

AI is rapidly becoming a core capability in modern digital experience platforms. As developers working with Optimizely CMS 12 (.NET Core), the real...

Keshav Dave | Feb 15, 2026

Reducing Web Experimentation MAU Using the REST API

Overview Optimizely Web Experimentation counts an MAU based upon the script snippet rendering for evauluation of web experiement. Therefore when yo...

Scott Reed | Feb 13, 2026