We are currently experiencing a problem with the ALMA service. As a result, the service is temporarily unavailable to users within the University.

We are currently experiencing a network disruption with Odido, which is affecting our mobile phone accessibility. As a result, you may not be able to reach us via the mobile network. Good to know: Calling over WiFi appears to be working. If possible, we recommend using WiFi calling to get in touch with us. We understand this is inconvenient and are working with Odido to resolve the issue as quickly as possible. This page will be updated as soon as we have more information or the issue is resolved.

We are currently experiencing an outage in Odido’s network, which is causing limited mobile service. For more information, please visit Odido’s website: Is there an outage affecting Odido’s mobile services? | https://community.odido.nl/netwerk-en-verbinding-559/is-er-een-storing-met-de-mobiele-diensten-van-odido-383670

On Monday, 12 January 2026, there was a disruption in the operation of the video portal. The video portal is displaying an error message and is unavailable. We are currently investigating the cause and working to find a solution. We are in close contact with the supplier and will post updates as soon as more information becomes available.

Leiden University is currently experiencing network problems due to ongoing attacks on the SURF network used by Leiden University. As a result, certain systems may be poorly accessible or unavailable. The ISSC is working hard to resolve the issues as soon as possible however, in doing so, the ISSC is dependent on the actions of SURF. The ISSC is vigilant and we monitor our environment. Surf will provide updates on a regular basis. The next update is expected around noon.

Malfunctions and scheduled maintenance of ICT systems.

Dear colleagues, As you may already have noticed, the university is currently experiencing a disruption. This is the result of an internal technical issue, during which a large number of staff accounts were set to inactive on Thursday evening. As soon as this issue was identified, the process to reactivate all accounts was initiated. This process is still ongoing, and at this time it is unclear when everything will be fully operational again. In addition to access to your own account, you may also temporarily be unable to use other services, such as Microsoft Office or Salto. It is therefore possible that you have already regained access to your UL account, but not yet to these services. This too is a temporary issue. We very much regret that some of our staff members have been affected by this, as it can of course hinder your work. We kindly ask all affected colleagues for a little more patience and to check from time to time whether your account has been reactivated. As soon as there are any new developments, an update will be provided here.