What is Root Cause Analysis?
Root cause analysis is a systematic approach to finding the actual, underlying cause of an IT incident, instead of only fixing the visible symptom. Rather than rebooting a device or closing a ticket as soon as the user is back up and running, root cause analysis traces the chain of cause and effect back to what actually triggered the problem. In Zscaler operations, that usually means systematically weighing up device, network, internet provider and Zscaler policy against each other instead of guessing.
Root cause analysis in detail
A structured root cause analysis typically follows a chain of possible causes: first, whether the problem sits with the endpoint, for example resource load, then the local network, such as Wi-Fi signal quality, then the path through the internet provider, and finally the Zscaler policy itself. Each stage can be confirmed or ruled out with measured data instead of resting on guesswork.
In a Zscaler context, Digital Experience Monitoring and its metrics, such as the ZDX score, together with deep tracing analysis, provide the technical foundation for this chain. Combined with the policy status from ZIA and ZPA, that adds up to a solid statement about the actual cause.
Why does root cause analysis matter in Zscaler operations?
Access and performance problems are among the most common helpdesk tickets, yet their cause is rarely obvious. Without a structured analysis, teams often end up guessing or escalating everything to Zscaler administration by default, which costs time and frequently never addresses the actual cause.
For recurring problems, root cause analysis is also the basis for spotting patterns, for example when a particular site or application is affected disproportionately often, and for turning that into lasting improvements instead of just closing individual cases.
Common sources of error
- Tickets get closed as soon as the symptom disappears, without the cause ever being identified.
- Individual data sources such as ZDX values get looked at in isolation, without linking them to policy status.
- Recurring patterns across multiple tickets go unnoticed.
- The helpdesk has no access of its own to the data it needs and has to escalate every analysis.
Root cause analysis in practice: what CentaurNexus contributes
CentaurNexus automates this chain of causation with Connectivity Triage Map: digital experience data from ZDX is combined with policy status from ZIA and ZPA, and the likely cause of a reported problem is named in plain language, device, Wi-Fi, internet provider or Zscaler policy. That lets the helpdesk classify the case with confidence instead of guessing, without needing its own Zscaler admin rights. For what that looks like day to day, see the guide Is it Zscaler or the Wi-Fi?
Related terms
Frequently asked questions about root cause analysis
A root cause analysis is a systematic approach to finding the actual, underlying cause of an IT incident instead of only fixing the visible symptom. The goal is not just to resolve the incident in the short term, but to prevent it from recurring by fixing the true cause.
If only the symptom gets fixed, for example by rebooting a device, the actual cause remains in place and the incident often comes back. A genuine root cause analysis traces the chain of cause and effect back to what actually triggered it.
Typically, device state, network path and application reachability from Digital Experience Monitoring tools such as ZDX are combined with policy status from ZIA and ZPA. Only combining these sources allows for a solid statement about the cause.
Access and performance problems can come from the device, the Wi-Fi, the internet provider, or a Zscaler policy. Without a structured root cause analysis, teams often end up guessing or escalating unnecessarily, which costs time to resolve and frustrates users and IT teams alike.
No. Everyday helpdesk tickets such as ‘the application is slow’ benefit from a structured search for the cause too, because it shortens resolution time and stops small recurring problems from going unnoticed.
- Zscaler Help Portal: official documentation on Digital Experience and ZDX Deep Tracing - help.zscaler.com
Note: CentaurNexus is an independent product of SourcingBlox GmbH and not an offering of Zscaler, Inc. Product and brand names belong to their respective owners.