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DATEV Outage History

Every past DATEV outage tracked by IsDown, with detection times, duration, and resolution details.

There were 35 DATEV outages since May 2026. The 35 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Minor May 5, 2026

May 2026: Issues with RZ-Kommunikation

Detected May 5, 2026 5:44 AM EDT · Resolved May 5, 2026 7:06 AM EDT · Duration about 1 hour

DATEV experienced issues with RZ-Kommunikation (data center communication) that lasted 1.4 hours. The incident was classified as minor, indicating limited impact on service functionality. The communication issues have been resolved.

Minor May 5, 2026

May 2026: Issues with RZ-Abruf im Installations-Manager

Detected May 5, 2026 5:31 AM EDT · Resolved May 5, 2026 7:06 AM EDT · Duration about 2 hours

DATEV experienced issues with the RZ-Abruf function in the Installation Manager, resulting in a minor service disruption. The incident affected users' ability to properly access or use the installation management functionality. The service was restored after approximately 1.6 hours.

Minor May 5, 2026

May 2026: Issues with DATEV Lizenz-Umstellungsassistent

Detected May 5, 2026 5:25 AM EDT · Resolved May 5, 2026 6:46 AM EDT · Duration about 1 hour

DATEV experienced issues with their Lizenz-Umstellungsassistent (License Migration Assistant) service. The incident was classified as minor and affected users' ability to properly use the license migration functionality. The service disruption lasted approximately 1.4 hours before being resolved.

Minor May 5, 2026

May 2026: Issues with Abschlussprüfung Prüfungsdokumentation

Detected May 5, 2026 4:35 AM EDT · Resolved May 5, 2026 8:06 AM EDT · Duration about 4 hours

DATEV experienced issues with their Abschlussprüfung Prüfungsdokumentation (audit documentation) service for 3.5 hours. The incident was classified as minor, indicating limited impact on users' ability to access or use the audit documentation functionality. The service has since been restored to normal operation.

Minor May 5, 2026

May 2026: Issues with DATEV Zahlungsdatenservice für weitere Zahlungsdienstleister - Buchungsvorschläge

Detected May 5, 2026 4:30 AM EDT · Resolved May 5, 2026 8:18 AM EDT · Duration about 4 hours

DATEV experienced issues with their Zahlungsdatenservice (payment data service) for additional payment service providers, specifically affecting booking suggestions functionality. The service disruption was classified as minor and lasted approximately 3.8 hours before being resolved.

Minor May 5, 2026

May 2026: Issues with DATEV Steuerkonto online

Detected May 5, 2026 4:00 AM EDT · Resolved May 5, 2026 8:26 AM EDT · Duration about 4 hours

DATEV Steuerkonto online experienced service issues for 4.4 hours. The incident was classified as minor, indicating limited impact on users. The service has since been restored to normal operation.

Minor May 5, 2026

May 2026: Issues with Kommunikation Finanzverwaltung: Nachrichtenerstellung und -übermittlung

Detected May 5, 2026 4:00 AM EDT · Resolved May 5, 2026 8:14 AM EDT · Duration about 4 hours

DATEV's Kommunikation Finanzverwaltung service experienced issues with message creation and transmission functionality. The incident was classified as minor and affected users' ability to create and send messages through the tax administration communication system. The service disruption lasted 4.2 hours before being resolved.