Zscaler performance issues. Update - Thu, 27 Mar 2025 15:21:37 UTC.
Zscaler performance issues With windows clients there are no speed issues, sure a little bit degraded performance because routing through Zscaler network but not this huge impact at all. 1. Zscaler is actively investigating the root cause and is continuously monitoring the environment to ensure stability and reliability. 3 days ago · Zscaler team have identified the root cause of the issue and working on a fix to mitigate. Any help or guidance will be appreciated Murat. Update - Thu, 27 Mar 2025 15:21:37 UTC. Dec 16, 2024 · We have received reports from the North America region regarding performance degradation, connectivity issues, and application timeouts. Dear ZsCaler community, Still not able to resolve my slow file access latency over smb2 issues. Based on telemetry data and customer feedback, the issue has been mitigated. The health of the user’s home Wi-Fi network can contribute to performance issues. Apr 1, 2021 · User experience problems can be triggered at an endpoint, so let’s take a closer look at Wi-Fi and client-device performance. Mesh wi-fi networks at home caused performance issues. 8. Outdated wi-fi drivers on laptop. Update - Sat, 26 Apr 2025 12:32:55 UTC. 5. Use the page load time metrics to find when the user performance degraded. We faced the same issue, turns out there was a rate limiting issue in the peer network which Zscaler engineering team sorted out with the peer. After going through the issue with multiple support engineers and doing many packet captures/MTRs, we identified that users who are on Bell are the most affected by this issue. 0 = Internet performance is what is expected ZCC off = Performance is what is expected *** The solution *** NOTE! This only works in ZTunnel 2. "The issue has been mitigated. The last hop before zscaler loses 50% of the packets and cause retransmissions. Oct 25, 2022 · Update 10/25/22 12:26 PM ET: Zscaler has confirmed that the disruption was caused by an issue in 'zscalertwo. So we have quite a few remote users, and we've been battling this issue for a while now. Saving a file stored at smb network Share is extremely slow it takes upto 40seconds or more. If you are still experiencing issues, please reach out to Zscaler Support. I know speedtest websites arent to be taken at face value all the time but I get multiple complaints from my remote users that when zscaler is off their home bandwidth speeds are 700mbps - 800mbps. 2. On top of that, we discovered that one regional ZEN was experiencing much more of a performance impact vs. Following our investigation, we have identified that the performance issue was isolated to a single tenant. You should use ZTunnel 2. Thanks manuel - there seems to be an issue with UDP throttling in DTLS that is causing some performance issues. another regional ZEN nearby. x. The Zscaler team is continuing to work on the fix for the issue. One issue with some measurement tools is the length of the test. Public speed test will always show slower. So, in the event that you are seeing Teams performance issues for Zscaler Client users, the latest recommendation is to bypass only the three IP CIDR blocks for Teams UDP traffic (listed as Optimize required on Microsoft’s list). A couple of months ago, we worked with Zscaler and switched everyone in our testing pool over to Tunnel 2. To obtain a more accurate measure of end-user performance Zscaler recommends that you use one of your browser's network analy the Zscaler Analyzer tool which was designed to emulate end to end user experience with Zscaler, sis tools, or Wireshark. net Cloud' and that it has now been mitigated. Another usefull web tool is the Zscaler cloud performance tool that is to measure if there is an issue between the user and the ZIA edge but again don’t bypass it in the PAC file and the Zscaler Analyzer can be used after this tool to check the connection to the web page itself. 0 and the problems we were experiencing with ZCC and O365/M365 authentication when connected to VPN had completely gone away. Still troubleshooting, but getting better. Issues with Common Measurement Tools. 4Ghz & 5Ghz. I’m update to latest mac os monterey. *** The problem *** ZCC | ZTunnel 2. We disabled and uninstalled Endpoint Security, disabled the MacOS Firewall and tested with devices complete separated from MDM policies. I’ve turned off wifi extenders and still no change. 0 = Internet performance is terrible ZCC | ZTunnel 1. Update - Sat, 26 Apr 2025 15:16:43 UTC Do you have a ZPA guidance article for 1) troubleshooting performance issues 2) checking real-time service status ? you will need to select the cloud as Zscaler If you're seeing this message, that means <strong>JavaScript has been disabled on your browser</strong>, please <strong>enable JS</strong> to make this app work. Wi-fi signal strength caused constant flipping between 2. However when Zscaler is on they drop to 175mbps. it has been more 8 weeks now zscaler support not able to resolve this. Further updates will be shared here as progress is made. Performance is very subjective but you could also use ZDX to see a deep trace on just where latency exists. Traffic gets throttled or dropped which is why Zscaler gives you a speed test that doesn't have that issue. Wi-Fi issues. 5 app. 0 in the app Another usefull web tool is the Zscaler cloud performance tool that is to measure if there is an issue between the user and the ZIA edge but again don’t bypass it in the PAC file and the Zscaler Analyzer can be used after this tool to check the connection to the web page itself. 0 mode using client version 3. Our issue is very similar to what is going on here. Has anyone experienced the same issue. @G-Man8 Not really aware of what ZDX is, I’ve ZScaler 3. ) Logon to Zscaler admin 2. ) We started implementing Zscaler in Q3 2024 and this has been a major road block. 0 and add those CIDR blocks to the destination route exclusion list for 2. Also, would recommend you to attach MTR files and packet captures with ZCC enabled and disabled. Hope this helps. Mar 27, 2025 · We are continuing to work with the affected tenant to optimize their configuration and prevent recurrence. vuogit hinbvv vpmc lun fgino iqzjv lqds intm hddzvc kgvqz ubpo erb ofii xotm kjvrzr