Outages and root causes.
Two years of public outages, and what each company said caused them. Every entry links to the company's own write-up; nothing here is our speculation.
Status pages re-read 6 min ago
Incidents with a published root cause
By month, last two years · Microsoft Azure
Peak 0 · December 2024
- Total: 0
- December 2024: 0
- January 2025: 0
- February 2025: 0
- March 2025: 0
- April 2025: 0
- May 2025: 0
- June 2025: 0
- July 2025: 0
- August 2025: 0
- September 2025: 0
- October 2025: 0
- November 2025: 0
- December 2025: 0
- January 2026: 0
- February 2026: 0
- March 2026: 0
- April 2026: 0
- May 2026: 0
- June 2026: 0
- July 2026: 0
- August 2026: 0
- September 2026: 0
- October 2026: 0
- November 2026: 0
- Incidents listed
- 0
- With a published RCA
- Official write-ups
- 0
- Linked from the incident
- Major outages
- 0
- As graded by each company
- Services
- 0
- With at least one entry
Notable outages, summarised
Read from each company's published analysis and summarised in our own words. Follow the link for the full account.
- Microsoft Azure
Sep 30, 2026
Networking gateway degradation in multiple regions
Management operations for ExpressRoute, VPN Gateway, Application Gateway, Azure Firewall, Bastion and Virtual WAN failed intermittently for nearly six hours, and some ExpressRoute gateways lost on-premises connectivity.
Root cause, as stated by Microsoft Azure
A paused gateway OS update resumed across many regions at once and, combined with an earlier change that slowed configuration processing, overwhelmed a shared regional control plane.
Read the official analysis (opens in a new tab)Report an error (opens a correction request in a new tab)
- Microsoft Azure
Sep 29, 2026
Azure OpenAI and AI services failures in Sweden Central
Azure OpenAI, Foundry and related AI services in Sweden Central returned intermittent errors and high latency for about six hours.
Root cause, as stated by Microsoft Azure
A peak-hour deployment cleared an internal service's caches, and defects in its cache handling sent around 20 times normal traffic to the backend, exhausting connections and causing a restart loop.
Read the official analysis (opens in a new tab)Report an error (opens a correction request in a new tab)
- Microsoft Azure
Oct 29, 2025
Azure Front Door global outage
Azure Front Door and CDN traffic failed with timeouts and DNS errors for over eight hours, affecting the Azure portal, Entra ID, App Service, SQL Database, Microsoft 365 and many customer sites.
Root cause, as stated by Microsoft Azure
Configuration changes processed by two different control-plane versions produced incompatible metadata that triggered a latent crash bug on edge servers, and validation safeguards did not catch it.
Read the official analysis (opens in a new tab)Report an error (opens a correction request in a new tab)
- Microsoft Azure
Jul 30, 2024
Azure Front Door connectivity issues
Customers reaching services through Azure Front Door and Azure CDN, including the Azure portal and some Microsoft 365 services, saw timeouts and latency spikes; most impact ended in about two hours with a long tail to eight.
Root cause, as stated by Microsoft Azure
A DDoS attack was the trigger, but the outage itself came from protection routes that could not be restored at one site plus a latent network misconfiguration that funnelled outside traffic into the European DDoS protection system.
Read the official analysis (opens in a new tab)Report an error (opens a correction request in a new tab)
- Microsoft Azure
Jul 18, 2024
Central US storage outage affecting many services
Virtual machines and many dependent services in the Central US region (including SQL Database, Cosmos DB, Azure DevOps and parts of Microsoft 365) became unavailable or unreachable; storage recovered in about five hours and full mitigation took about a day.
Root cause, as stated by Microsoft Azure
Microsoft says an allow list of VM host addresses was built while some of its source files were unreachable, and the incomplete list was rolled out across the region's storage, which then rejected disk requests from valid hosts.
Read the official analysis (opens in a new tab)Report an error (opens a correction request in a new tab)
From the status pages
Showing incidents whose vendor named us-west-1. Incidents with no stated region are not included, though they may have affected it too.
Nothing matches these filters.
Who publishes root causes
Write-ups posted on status pages, last two years
Public information only
Everything on this page was already published by the companies themselves or by public bodies. statuswall gathers it in one place, links every item to its original, and adds nothing from private or leaked sources.
Sources
- Official status pages: incident titles, severity, times and the link to each published root-cause analysis, exactly as each company posted them
- Company engineering blogs and incident reports: the basis for the notable-outage summaries, each linked from its card
How fresh it is
- Incidents and RCA links: re-read from every status page about once an hour; last run 6 min ago
- Notable-outage summaries: written by hand and last checked against their sources on Nov 10, 2026
Titles, severity and times are as published on each company's status page. "Published RCA" means the company posted a postmortem on that incident's official page; we link to it and do not reproduce it. Many companies publish root causes on a blog instead, or not at all, so the absence of a link is not evidence that no analysis exists. Severity grading differs between companies and is not comparable across them. This is not a complete record of every outage.
statuswall is independent and is not affiliated with, sponsored by or endorsed by any company named here. Company and product names are used only to identify whose public information is being referred to. The information is provided as is, for general reference, with no guarantee that it is complete, current or free of error; it is not security, legal or purchasing advice. Where this page and an official source differ, the official source is right.