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DATEV Outage History

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

There were 75 DATEV outages since May 2026. The 75 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Minor May 22, 2026

May 2026: Issues with DATEV Kanzleimanagement (Pre-Pilotierung)

Detected May 22, 2026 9:44 AM EDT · Resolved May 22, 2026 10:44 AM EDT · Duration about 1 hour

DATEV Kanzleimanagement (Pre-Pilotierung) experienced a service disruption that affected users' access to the law firm management system. The incident was classified as minor and lasted approximately 1 hour before being resolved.

Minor May 22, 2026

May 2026: Issues with DATEV Kanzleimanagement basis

Detected May 22, 2026 9:44 AM EDT · Resolved May 22, 2026 10:44 AM EDT · Duration about 1 hour

DATEV Kanzleimanagement basis experienced a service disruption lasting 1 hour. The incident was classified as minor, indicating limited impact on users. The service has since been restored to normal operation.

Minor May 22, 2026

May 2026: Issues with DATEV Kanzleimanagement Angebotsassistent

Detected May 22, 2026 9:44 AM EDT · Resolved May 22, 2026 10:48 AM EDT · Duration about 1 hour

DATEV experienced a minor service disruption affecting the Kanzleimanagement Angebotsassistent (office management proposal assistant) feature. The incident lasted approximately 1.1 hours before being resolved. Users were unable to access or use the proposal assistant functionality during this period.

Minor May 22, 2026

May 2026: Issues with Kommunikation Finanzverwaltung: Digitale Bescheide abrufen

Detected May 22, 2026 2:00 AM EDT · Resolved May 22, 2026 5:19 AM EDT · Duration about 3 hours

DATEV's Kommunikation Finanzverwaltung service experienced limited functionality for retrieving digital tax notices (Digitale Bescheide abrufen) for 3.3 hours. The service was classified as having minor impact during this period. The issue has since been resolved, restoring full access to digital notice retrieval functionality.

Minor May 21, 2026

May 2026: Issues with DATEV Interessentenverwaltung

Detected May 21, 2026 7:46 PM EDT · Resolved May 21, 2026 11:11 PM EDT · Duration about 3 hours

DATEV Interessentenverwaltung experienced service issues that lasted 3.4 hours. The incident was classified as minor, indicating limited impact on users. The service has since been restored to normal operation.

Minor May 21, 2026

May 2026: Issues with DATEV Kanzleimanagement (Pre-Pilotierung)

Detected May 21, 2026 3:36 AM EDT · Resolved May 21, 2026 8:41 AM EDT · Duration about 5 hours

DATEV Kanzleimanagement experienced issues where electronic invoices (E-Rechnungen) were being sent successfully, but the system displayed incorrect status information, showing invoices as stuck in the sending process. The incident affected the status display functionality for invoice processing. The issue was resolved after 5.1 hours.

Minor May 21, 2026

May 2026: Issues with DATEV Kanzleimanagement basis

Detected May 21, 2026 3:31 AM EDT · Resolved May 21, 2026 8:41 AM EDT · Duration about 5 hours

DATEV Kanzleimanagement basis experienced issues where electronic invoices (E-Rechnungen) were successfully sent but their status was not correctly displayed in the system. From the application's perspective, invoices appeared stuck in the sending process despite being transmitted successfully. The incident lasted 5.2 hours and was classified as minor severity.

Minor May 21, 2026

May 2026: Issues with DATEV E-Rechnungsschreibung

Detected May 21, 2026 2:47 AM EDT · Resolved May 21, 2026 8:13 AM EDT · Duration about 5 hours

DATEV's E-Rechnungsschreibung service experienced issues where electronic invoices were successfully sent but the system incorrectly displayed their status, causing invoices to appear stuck in the sending process from the application's perspective. This status display problem affected users' ability to track invoice delivery confirmation. The issue was resolved after 5.4 hours.

Minor May 21, 2026

May 2026: Issues with Kommunikation Finanzverwaltung: Digitale Bescheide abrufen

Detected May 21, 2026 2:37 AM EDT · Resolved May 21, 2026 8:05 AM EDT · Duration about 5 hours

DATEV's Kommunikation Finanzverwaltung service experienced issues preventing users from retrieving digital tax notices (digitale Bescheide). The service disruption lasted 5.5 hours and was classified as a minor incident. The issue has been resolved, restoring access to digital notice retrieval functionality.

Minor May 21, 2026

May 2026: Issues with E-Rechnung Service

Detected May 21, 2026 2:37 AM EDT · Resolved May 21, 2026 8:09 AM EDT · Duration about 6 hours

DATEV's E-Rechnung Service experienced issues where electronic invoices were being sent successfully, but the system displayed incorrect status information. From the application perspective, invoices appeared stuck in the sending process even though they were actually being transmitted. The service disruption lasted 5.5 hours before being resolved.