Member Avatar for PhilliePhan

Microsoft Update KB951748 is known to cause loss of Internet access for ZoneAlarm users!

I suggest either Option 1 or Option 2 in the link below:

http://download.zonealarm.com/bin/free/pressReleases/2008/LossOfInternetAccessIssue.html

PP :)

  • 2 Contributors
  • 2 Replies
  • 385 Views
  • 1 Day Discussion Span
  • Latest Post Latest Post by PhilliePhan

Dani AI

Generated

Short summary and source: Microsoft’s July 2008 DNS security update (MS08-037 / KB951748) was revised to note that customers running ZoneAlarm or Check Point endpoint products might lose network connectivity after installation. Microsoft recommends applying the security update but concurrently checking vendor guidance for affected third‑party firewall/endpoint software. (learn.microsoft.com)

Recommended order of fixes (least risk first): apply the vendor patch for ZoneAlarm/Check Point — that was the intended solution and is what most reputable troubleshooting guides advised rather than removing Microsoft’s DNS fix. If a vendor patch is not immediately available, lowering ZoneAlarm’s Internet‑zone slider to Medium was offered as a temporary workaround (it reduces protection and therefore is not ideal). These remediation options were published by independent support sites while Microsoft and Check Point/ZoneAlarm coordinated. (bleepingcomputer.com)

If removal of KB951748 is unavoidable (last resort): uninstall through Add or Remove Programs with “Show updates” enabled, or run the update’s Spuninst.exe found in the Windows uninstall folder for that KB. Uninstallation order matters for server/client packages that share binaries — follow Microsoft’s documented removal notes to avoid regressing shared components. Note that removing KB951748 leaves the DNS spoofing fixes absent, so treat it as temporary and reapply vendor-verified fixes as soon as possible. (learn.microsoft.com)

Troubleshooting steps when connectivity is already broken (practical workflow used in many successful recoveries): obtain the vendor’s full installer on another computer, disconnect the affected PC from the network, boot into Safe Mode to uninstall/reinstall the firewall if required, then reset the Windows network stack and DNS cache. Common useful commands (run from an elevated Command Prompt), then reboot:

ipconfig /flushdns
ipconfig /release
ipconfig /renew
netsh winsock reset

Reinstall the updated ZoneAlarm/endpoint software and then reinstall KB951748 once the vendor build is in place. This sequence preserves the security fix while restoring normal network behavior; it’s the safer path compared with permanently removing the Microsoft update. (bleepingcomputer.com)

Recommended Answers

All 2 Replies

Member Avatar for The Dude

Yes uninstalling the update is the BEST move..... (Unless your OK with sliding ZA to medium)

A friend who has XP does not have this update at all!! (He runs Zone alarm) and he wasnt prompted to install it.......

Member Avatar for PhilliePhan

Yes uninstalling the update is the BEST move..... (Unless your OK with sliding ZA to medium)

A friend who has XP does not have this update at all!! (He runs Zone alarm) and he wasnt prompted to install it.......

Check Point has updated ZoneAlarm to be compatible with KB951748. Links to the new DLs are on the linky I posted.

Options 1 or 2 no longer apply ;)

PP :)

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.