Error code
Sophos All models code NEP-6120
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Meaning
Summary Significant latency or complete failure, i.e. degraded browsing performance when attempting to access various websites using Mozilla Firefox Description Users may experience noticeable lag when browsing websites in Mozilla Firefox while Sophos Endpoint's "Real-Time Scanning Internet" and "Web Control" security features are enabled. Workaround Open Mozilla Firefox. In the address bar, type: about:config. Press Enter. If a warning appears saying "Proceed with Caution", click "Accept the Risk and Continue". In the search bar, type: network.dns.use_https_rr_as_altsvc. When the preference appears, click the toggle button on the right so the value becomes false
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Address of this page: https://www.remfixit.com/tr/sophos/tum-modeller/nep6120