I'm having a problem with frequent and repeated freezes of the UTM web interface. I don't see a large number of messages here reporting similar problems, so I assume it's not a general problem with the Sophos web UI, but something particular to my situation. It's baffling, however, because, for me, the problem is so widespread. It occurs both with my software UTM at home, and with the hardware 220 at the office (both running 9.209-8). Furthermore, it's not tied to a particular OS or browser. On the Mac, it happens with Safari, Firefox, and Chrome. On the PC, it happens with Internet Explorer, Firefox, and Chrome. I even see it in Mobile Safari on my iPad.
I have no problems at all connecting to the UI and logging in. Typically, I don't have any problems as long as I stay on the dashboard page, but once I move to another page, and spend anything more than, say about 15 or 20 seconds, on another page, that's when the problems start. For instance, when I'm on the Network Protection > Firewall page. If I click on the Advance tab at the top, it'll go bold, as if selected, but the rest of the page is still showing the firewall settings, not the advanced settings. If if I click NAT in the left side menu, "NAT" turns orange, as if it's selected, but I'm still seeing the firewall settings, not the NAT settings. Meanwhile, the little 8-dot "spinner" at the top of the page, just to the left of the Sophos logo, is spinning and spinning, as if the page is trying to load, but it never does. Once this happens, the only solution is to hit the page re-load button, and re-login. Then of course, I have to navigate back to where I was (or was trying to go). If I do it quickly enough I'll probably get there without a freeze, but it might freeze again on the next page I try to go to, if I wait a short while before trying to go there.
The problem doesn't happen every time, or on every page. It's maybe 25% of the time -- enough to be massively frustrating, but not enough to render the UI unusable -- you just have to be patient and willing to refresh and re-login a lot.
I've tried deactivating third-party (non-default) browser plugins, but that hasn't helped. Also, I should mention that this isn't just a recent problem. It started months ago, but it seems to be getting worse lately. And I'm not having similar freezing problems on any other web sites, just the Sophos web UI.
Has anyone else seen this problem? Any one have any suggestions on how to fix?
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