Check if Zscaler Milan III is down, recent outages, user-reported issues, and outages map.
Zscaler Milan III is working normally
Last checked from Zscaler's status page
This chart displays the number of user-reported issues over the past 24 hours, grouped into 20-minute intervals. It's normal to see occasional reports, which may be due to individual user issues rather than a broader problem. We only consider an issue widespread if there are multiple reports within a short timeframe.
IsDown has tracked 3 incidents for Zscaler Milan III since started monitoring Zscaler status in March 2023. We collect data from 4400+ services, and normalize the data to give you a clear picture of the impact of the outage.
14 days ago · lasted 22 minutes
We are investigating an issue with our Milan III datacenter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC. If you require any assistance or would like additional information about this incident...
about 2 months ago · lasted about 11 hours
Zscaler has identified a transit issue causing intermittent access problems to Microsoft services at our Zurich datacenter. Zscaler is actively working to resolve the issue and restore full accessibility. For more information, please check our FAQ...
about 1 year ago · lasted about 1 hour
Zscaler has detected an issue with our Milan III datacenter. If you’re currently experiencing any traffic impacting issues please failover to your secondary DC. If you require any assistance or would like additional information about this incident...
We've tracked and collected 3 incidents for Zscaler Milan III since started monitoring Zscaler status
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Services commonly monitored together with Zscaler
Zscaler Milan III isn't down. You can check Zscaler Milan III status and incident details on the top of the page. IsDown continuously monitors Zscaler Milan III official status page every few minutes. In the last 24 hours, there were 0 outages reported.
Zscaler Milan III is currently operational. You can check Zscaler Milan III status and incident details on the top of the page. The status is updated in almost real-time, and you can see the latest outages and issues affecting customers.
No, there is no ongoing official outage. Check on the top of the page if there are any reported problems by other users.
Currently there's no report of Zscaler Milan III being slow. Check on the top of the page if there are any reported problems by other users.
IsDown monitors the Zscaler Milan III official status page every few minutes. We also get reports from users like you. If there are enough reports about an outage, we'll show it on the top of the page.
Zscaler Milan III last outage was on July 30, 2025 with the title "Microsoft Connectivity Issues at Milan III (MIL3) Data Center"
IsDown and DownDetector help users determine if a service is having problems. The big difference is that IsDown is a status page aggregator. IsDown monitors a service's official status page to give our customers a more reliable source of information. The integration allows us to provide more details about the outage, like incident title, description, updates, and the parts of the affected service. Additionally, users can create internal status pages and set up notifications for all their third-party services.
IsDown offers an easy way to monitor Zscaler with maximum flexibility
IsDown monitors Milan III for major outages. A major outage is when Milan III experiences a critical issue that severely affects one or more services/regions. When Zscaler marks an incident as a major outage, IsDown updates its internal status, the customer status page and dashboard. Depending on the customer settings, IsDown will also send notifications.
IsDown monitors Zscaler status page for minor outages. A minor outage is when Milan III experiences a small issue affecting a small percentage of its customer's applications. An example is the performance degradation of an application. When a minor outage occurs, IsDown updates its internal status and shares that information on the customer status page. Depending on the customer settings, IsDown will also send notifications.
IsDown collects all information from the outages published in Zscaler status page to provide the most accurate information. If available, we gather the title, description, time of the outage, status, and outage updates. Another important piece of information is the affected services/regions which we use to filter the notifications that impact your business.
IsDown monitors Zscaler and all their 94 components that can be affected by an outage. IsDown allows you to filter the notifications and status page alerts based on the components you care about. For example, you can choose which components or regions affect your business and filter out all other outages. This way you avoid alert fatigue in your team.
Zscaler and other vendors don’t always report outages on time. Our crowdsourced status platform helps you stay ahead of outages. Users report issues and outages, sharing details on what problems they are facing. We use that info to provide early signs of outages. This way, even without an official update, you can stay ahead of possible problems.
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