Problem with Confluene Upgrade

I'm trying to upgrade our Confluence environment from v3.5 to v4.0 (eventually, to v5x) and I'm running into a strage error on startup.

The catalina.out file just shows "INFO: Server startup in 1008473 ms"

In the browser I get:

Unable to start up Confluence. Fatal error during startup sequence: confluence.lifecycle.core:pluginframeworkdependentupgrades (Run all the upgrades that require the plugin framework to be available) - com.atlassian.confluence.content.render.xhtml.migration.exceptions.MigrationException: java.util.concurrent.ExecutionException: java.lang.RuntimeException: org.owasp.validator.html.ScanException: java.io.IOException: The character '' is an invalid XML character

I have not been able to find any information on where to look for this error.

2 answers

1 accepted

There are some known issues when trying to upgrade from a certain version to another.

What is known to work well is to upgrade from Confluence version 3.5.17 to version 4/5.

So first, upgrade your Confluence 3.5 to the version 3.5.17, then upgarde to version 4.

We had upgraded to 3.5.13 (from 3.3.3) so I wasn't sure if we needed to go higher at the 3.5 level. I'll download 3.5.17 and do that upgrade first then try the 4 again.

Is there any value of going to 4.0 first or is it safe to go directly to 4.3.7 from 3.5.17??

Thanks Felipe, by going to 3.5.17 first, I was successfully able to upgrade to v4.3.7

Now the process of finding all the features and functions that no longer work can begin ;)

It's safe to go to the latest version. I've already jumped to the latest 5 version from 3.5.17

Suggest an answer

Log in or Sign up to answer
Atlassian Community Anniversary

Happy Anniversary, Atlassian Community!

This community is celebrating its one-year anniversary and Atlassian co-founder Mike Cannon-Brookes has all the feels.

Read more
Community showcase
Kesha Thillainayagam
Posted Apr 13, 2018 in Confluence

We want to hear how your non-technical teams are using Confluence!

Hi Community! Kesha (kay-sha) from the Confluence marketing team here! Can you share stories with us on how your non-technical (think Marketing, Sales, HR, legal, etc.) teams are using Confluen...

2,088 views 25 10
Join discussion

Atlassian User Groups

Connect with like-minded Atlassian users at free events near you!

Find a group

Connect with like-minded Atlassian users at free events near you!

Find my local user group

Unfortunately there are no AUG chapters near you at the moment.

Start an AUG

You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs

Groups near you