| 2026-09-24 12:00 UTC | Server Backup US West (Chandler) System Maintenance scheduled for 24 September 2026 | maintenance | maintenance | open |
| 2026-09-23 20:10 UTC | Core DNS Protection Block Page is currently experiencing an issue | investigating | minor | open |
| 2026-09-23 12:00 UTC | Server Backup US East (Ashburn) system maintenance scheduled for 23 September 2026 | maintenance | maintenance | open |
| 2026-09-22 12:00 UTC | Server Backup US East (Boyers) system maintenance scheduled for 22 September 2026 | maintenance | maintenance | 2 d 0 h (approx.) |
| 2026-09-22 12:00 UTC | Server Backup EU (Amstelveen) and Server Backup UK (Bracknell) System Maintenance scheduled for 22 September 2026 | maintenance | maintenance | 20 h 08 min (approx.) |
| 2026-09-21 12:00 UTC | Server Backup Canada (Mississauga) System Maintenance scheduled for 21 September 2026 | maintenance | maintenance | 24 h 29 min (approx.) |
| 2026-09-18 15:11 UTC | CTIS Service was in a degraded state in OCP US | resolved | minor | 2 h 19 min |
| 2026-09-17 15:29 UTC | Frankfurt EU8 experienced service degradation | postmortem | minor | 20 min |
| 2026-09-14 13:35 UTC | Frankfurt EU8 experienced a service degradation. | postmortem | minor | 41 min |
| 2026-09-14 12:26 UTC | Zix Archive Services - BCA and ZixArchive receiving Error 500 | resolved | minor | 2 h 23 min |
| 2026-09-13 03:00 UTC | Network Maintenance scheduled for 13 September 2026 | maintenance | maintenance | 33 h 29 min (approx.) |
| 2026-09-12 10:00 UTC | System Maintenance scheduled for 12 September 2026 | maintenance | maintenance | 26 h 30 min (approx.) |
| 2026-09-09 07:49 UTC | Frankfurt EU8 experienced service degradation | postmortem | minor | 24 min |
| 2026-09-07 00:00 UTC | IM3970459 - Certificate Renewal | maintenance | maintenance | 2 d 12 h (approx.) |
| 2026-09-06 14:00 UTC | Singapore SG20 Application Maintenance scheduled for 6 September 2026 | maintenance | maintenance | 22 h 26 min (approx.) |
| 2026-09-06 14:00 UTC | Sydney AP10 Application Maintenance scheduled for 6 September 2026 | maintenance | maintenance | 22 h 26 min (approx.) |
| 2026-09-06 02:00 UTC | Rescheduled: C2273650 - Database maintenance | maintenance | maintenance | 3 d 10 h (approx.) |
| 2026-08-31 16:33 UTC | Zix - M365 - Some users may be unable to connect to Microsoft 365 Exchange Online | resolved | none | 3 d 19 h |
| 2026-08-28 16:15 UTC | Desktop Messaging BMS experienced delays in processing outbound fax delivery | resolved | minor | 1 h 42 min |
| 2026-08-28 02:42 UTC | Core Communications Europe was unavailable | resolved | minor | 41 min |
| 2026-08-26 14:12 UTC | MailStore Cloud was unavailable | resolved | critical | 1 h 45 min |
| 2026-08-22 01:41 UTC | Core EDR/MDR experienced service degradation | resolved | minor | 2 d 11 h |
| 2026-08-20 15:54 UTC | Core EDR/MDR is currently experiencing service degradation | resolved | minor | 9 h 51 min |
| 2026-08-13 18:36 UTC | Zix - Secure Cloud Portal - Microsoft 365 - Unable to assign licensing | resolved | none | 21 h 48 min |
| 2026-08-13 15:09 UTC | Cloud Fax services experienced delays in processing of fax files | resolved | minor | 1 h 53 min |
| 2026-08-09 08:05 UTC | Enterprise Service Management might have experienced issues accessing applications. | postmortem | minor | 17 h 11 min |
| 2026-08-08 15:05 UTC | "Unknown Error" in CP Portal | resolved | major | 45 h 53 min |
| 2026-08-07 17:59 UTC | Secure Cloud Portal - Microsoft 365 License Adjustements | resolved | none | 6 d 0 h |
| 2026-08-06 17:18 UTC | Zix Encryption Services - Secure Cloud Email Encryption AEE DLP requiring login | resolved | minor | 19 h 38 min |
| 2026-08-03 20:28 UTC | Core EDR/MDR experienced service degradation | resolved | minor | 6 h 23 min |
| 2026-07-31 14:29 UTC | TLS connection issues with multiple encryption services | resolved | minor | 3 h 05 min |
| 2026-07-31 04:43 UTC | São Paulo BR14 was experiencing service degradation. | postmortem | none | 0 min |
| 2026-07-28 17:31 UTC | Zix - Customer Portal incorrectly authentication issue | resolved | minor | 24 h 07 min |
| 2026-07-27 14:21 UTC | Oregon US6 experienced intermittent service unavailability | postmortem | minor | 1 h 33 min |
| 2026-07-27 09:03 UTC | Frankfurt EU8 experienced intermittent service unavailability. | postmortem | minor | 2 h 39 min |
| 2026-07-27 07:17 UTC | Frankfurt EU8 is currently experiencing intermittent service unavailability | resolved | minor | 1 h 01 min |
| 2026-07-26 16:15 UTC | Frankfurt EU8 experienced an issue | resolved | none | 0 min |
| 2026-07-25 21:57 UTC | Zix Hosted Exchange/Customer Portal not saving updates to user settings | resolved | minor | 39 h 11 min |
| 2026-07-24 15:05 UTC | Cloud Fax services North America experienced issues | resolved | none | 0 min |
| 2026-07-23 17:30 UTC | Zix Encryption Services - Secure Cloud Email Encryption (AEE/ZEE) Errors while delivering to DLP | resolved | minor | 3 d 20 h |
| 2026-07-22 16:21 UTC | Secure Messaging Portal (ZixPortal) Email sporadic message delivery delays | resolved | minor | 5 h 06 min |
| 2026-07-22 13:31 UTC | Zix Encryption Services - Secure Cloud Email Encryption (AEE/ZEE) not delivering messages | resolved | minor | 3 h 52 min |
| 2026-07-22 09:42 UTC | Core Archive CH is currently experiencing degradation of service. | resolved | major | 1 h 03 min |
| 2026-07-21 22:21 UTC | Email Message Privacy (EMP) Gateway Users unable to messages | resolved | minor | 17 h 56 min |
| 2026-07-20 13:34 UTC | Frankfurt EU18 experienced service unavailability | postmortem | critical | 49 min |
| 2026-07-20 10:43 UTC | Frankfurt EU18 may have experienced degradation issues with SLT calculation | postmortem | none | 23 min |
| 2026-07-14 15:25 UTC | Zix - Hosted Exchange - Mailboxes unable to connect - OWA/Outlook | resolved | major | 2 h 56 min |
| 2026-07-13 21:44 UTC | Zix - Hosted Exchange - Mailboxes unable to connect - OWA/Outlook | resolved | major | 15 h 01 min |
| 2026-07-13 14:02 UTC | Zix - Hosted Exchange - Mailboxes unable to connect - OWA/Outlook | resolved | major | 4 h 07 min |
| 2026-07-11 19:30 UTC | Core US was experiencing service unavailability. | resolved | critical | 49 min |
| 2026-07-10 16:40 UTC | MailStore Cloud was unavailable | resolved | none | 0 min |
| 2026-07-10 08:55 UTC | Zix Email Threat Protection Link Protection Errors | resolved | major | 6 h 49 min |
| 2026-07-09 15:20 UTC | Zix - Hosted Exchange (HEX) - OWA and Outlook connectivity | resolved | major | 3 d 21 h |
| 2026-07-07 16:19 UTC | Zix Encryption Services - Email Message Privacy (EMP) portals/plugin not responding | resolved | minor | 3 h 53 min |
| 2026-07-07 15:42 UTC | Server Backup US East (Boyers) experienced login issues | resolved | minor | 2 h 38 min |
| 2026-07-03 15:09 UTC | OCP North America was in a degraded state | resolved | minor | 1 h 10 min |
| 2026-06-30 11:07 UTC | IM3953059 - Zix - Hosted Exchange (HEX) - New reports of Outlook connection issues | resolved | none | 26 h 28 min |
| 2026-06-29 17:57 UTC | Core EDR/MDR experienced an issue | resolved | none | 0 min |
| 2026-06-29 13:35 UTC | IM3952482 - Zix - Hosted Exchange (HEX) - Outlook Connections | resolved | major | 21 h 35 min |
| 2026-06-29 07:01 UTC | Core Compliance in OCP US was not available | resolved | none | 1 h 28 min |