2017-12-14

2017-12-16: Citavi Cloud unavailable from 11:00 p.m. to 2:00 a.m. CET

On Saturday we will conduct maintenance to improve our servers:

Start: Saturday, 2017-12-16, 11:00 p.m. CET
End: Sunday, 2017-12-17, 2:00 a.m. CET

(Click here for a conversion of CET timezone)

While we pause cloud functionality, you can only work on your projects offline. Any changes made will only become visible to your team members once our servers are back online.
Should you want to work with your PDF files during these hours, you will have to download the files before we begin maintenance. Please find the necessary steps in our manual.

16.12.2017: Keine Citavi-Cloud von 23:00 bis 02:00

Am kommenden Samstag werden wir Verbesserungen an den Citavi Cloud-Servern vornehmen:

Start: Samstag, 16.12.2017, 23:00 Uhr MEZ
Ende: Sonntag, 17.12.2017, 02:00 Uhr MEZ
(Umrechnen in Ihre Zeitzone? Klicken Sie hier.)

In dieser Zeitspanne können Sie Ihre Cloud-Projekte nur offline bearbeiten. Ihre Änderungen werden erst für Ihre Teammitglieder sichtbar, wenn die Server wieder verfügbar sind. Wenn Sie mit Ihren PDF-Dateien in dieser Zeit arbeiten möchten, müssten Sie diese ggf. rechtzeitig herunterladen. In unserem Handbuch beschreiben wir die nötigen Schritte.


2017-12-12

New Citavi Beta 5.7.0.9 Now Available

Download the latest Citavi 5 beta version in our forum. Please share your feedback with us so that we can continue to improve Citavi.

Neue Beta verfügbar: 5.7.0.9

In unserem Forum finden Sie eine neue Beta-Version von Citavi 5. Ihr Feedback hilft uns, Citavi weiter zu verbessern.

FernUni Hagen: Webinar Citavi II

Kostenloses Webinar Citavi II: "Wissensorganisation mit Citavi"

Am Donnerstag, den 22.02.2018, bietet die Universitätsbibliothek Hagen ein kostenloses Webinar zum Thema "Wissensorganisation mit Citavi" an.

Weiterführende Informationen und die Möglichkeit zur Anmeldung auf: http://blog.fernuni-hagen.de/ub-fachportal-wiwi/2017/12/04/

FernUni Hagen: Webinar Citavi I

Kostenloses Webinar Citavi I: "Literaturverwaltung mit Citavi"

Am Montag, den 08.01.2018, bietet die FernUniversität in Hagen ein kostenloses Webinar zum Thema "Literaturverwaltung mit Citavi" an.

Weiterführende Informationen und die Möglichkeit zur Anmeldung auf: http://blog.fernuni-hagen.de/ub-fachportal-wiwi/2017/12/01/

2017-12-11

Downtime Statement

Unfortunately, Citavi 6’s Cloud experienced a short service outage on Saturday, December 9, 2017 from 3:00 p.m. to 6:00 p.m CET. This reduced the average uptime of our cloud services to 99,86%. Our team of developers immediately responded to fix the issue and restored full cloud functionality.

We want to be fully transparent regarding issues that may affect our users and would like to inform you of the causes of the problem and the steps that we are taking to minimize the risk of this happening again.

What happened during the outage?

Users could no longer open cloud projects or save changes in cloud projects or offline copies of cloud projects.

What caused the outage?

We use Azure, Microsoft’s cloud service, to host Citavi Cloud projects via a web app that runs several instances which process requests from Citavi 6. Web apps are comparable in function to web servers. These web app instances communicate with many other services, such as databases, file storage, and cache services. These services are only accessible via an encrypted message (= token). The token is also included in our web app to allow its running instances to access databases, storage, cache, etc. Decryption is accomplished through what is called a lazy initialization – the token is decrypted once and then stored in memory.

Azure restarts web app instances in regular intervals to install security fixes or to perform maintenance tasks. As several instances run concurrently, interruptions are prevented. On Saturday, December 9, 2017 at 3 p.m. CET one of our web app instances was restarted. During the decryption process of cache login information, the token could not be read. The error was produced within Azure’s framework, had never occurred before, and cannot be reproduced by us. Under normal circumstances it should not have had any effect since everything worked correctly when the same steps were repeated during subsequent testing.

We did not anticipate this error in Citavi’s code. Instead of repeating the decryption process, a faulty lazy object was now stored in the memory. This caused an error each time the cache was accessed, with the result that cloud projects could no longer be opened or edited. As only one instance was affected, Citavi for Windows was falsely notified of fully functioning cloud services. This is why Citavi did not respond properly and did not save the changes made to cloud projects in the local project cache. All changes made during the outage are unfortunately lost.

What steps are we taking?

Going forward, all nodes that use lazy connections will be reprogrammed to account for the above described error. Should it occur again, the initialization will simply be repeated and Citavi’s cloud services will function as intended.

Thank you for your understanding!