A fix to the Moodle service disruption to be deployed on Wed September 17 – service break expected between 8–12

We will deploy a fix for the recent Moodle service disruption on Wednesday, 17 September 2025. Moodle will be unavailable during the maintenance work from 8 AM to 12 PM on 17 September.

We will introduce a new distributed Moodle system (a new server cluster) as a resolution to the issue. This will help manage the increased load observed in the system. We have conducted extensive testing to ensure that the new system is as reliable as possible and capable of handling even higher levels of traffic than before.

We will continue to actively monitor Moodle’s performance after the new system goes live. If needed, we will implement additional measures based on how the system performs under real peak usage conditions.

The root causes of Moodle’s increased load are still under investigation. As a result, occasional slowness or service disruptions may still occur. We are working closely with our UK-based Moodle partner to resolve the issue for the benefit of the entire international Moodle community.

We sincerely thank all University community members for your patience during this unusually prolonged service disruption!

Previous news on the topic:

• Solu­tion in sight for Moodle’s prob­lems
• Prob­lems with Moodle per­sist – we apo­lo­gise for the chal­len­ging start to the aca­demic year
• Moodle service disruption: IT Centre's updating news item on staff intranet Flamma (requires login)

Photo: Anniina Sjöblom (University of Helsinki)