It prevents Internet Explorer from turning offline-mode on. added a registry key called: GlobalUseroffline under HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet configured Proxy settings in Internet Explorer/Edge under Local System Account context
My suspicion is that on systems with long uptime Windows couldn't connect to some Microsoft servers for a long time and than turned offline mode on (at least for Local System Account). Honestly, I still don't know why desktops which were rebooted every day didn't have problems with downloading definitions and desktops which were uptime all the time did have. In the COVID-19 pandemic many desktops were run at the office all the time and users logged-in remotely on them. The majority of desktops were OK (or at least not in at risk state, however they not always had the latest virus definitions). But not every desktop connected to the company's LAN has experienced such problems. The first point is pretty explicable - laptops which were connected at user's home, had the possibility to download updates at home. AND these computers/systems haven't been rebooted for a long time - the system uptime was counted in weeks the problem affected desktops, connected (only) to the company's LAN and thus were always behind firewall Proxy connection isn't forced (outbound traffic isn't redirected), so web-browsers're fully aware of going through Proxy Server (just like the SEP Client is).Įven though SEP Client was configured to use our Proxy we constantly had problems with random (different) desktops. Our network is strictly firewalled - it means all direct inbound AND outbound traffic is blocked out on our firewall.įor normal PC reaching the Internet is possible only through internal Proxy Server (which is also pretty restricted).
On each computer Symantec (now Broadcom) Endpoint Protection (SEP) is installed. There's a company LAN with a dozen of VLANs, ~170 PCs (laptops & desktops & servers/VMs). Eventually I found out the solution, so I decided to describe my experience.Īt the beginning I'm gonna briefly describe our configuration. Symantec Endpoint Protection #SEP behind firewalled network + proxy server Symantec Endpoint Protection #SEP #Broadcom behind firewalled network + proxy server I have been struggling with this problem for a long time.
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