Q: Internet browsers stopped connecting to http and https This thread is locked from future replies

I have a desktop pc with IE 8 and Mozilla.  I recently applied windows updated using IE 8.  After the updates, neither browser can access the internet.  I can ping yahoo do I know the acces and connectivity are there  but the browsers will not connect to either http or https.  Windows firewall is off.  Below is the diagnostic log from IE:

Last diagnostic run time: 02/08/10 10:36:54 Network Adapter Diagnostic
Network location detection

info Connecting through work or corporate network
info Redirecting user to support call 
HTTP, HTTPS, FTP Diagnostic
HTTP, HTTPS, FTP connectivity

info FTP (Passive): Successfully connected to
warn HTTPS: Error 12045 connecting to The certificate authority is invalid or incorrect 
warn HTTPS: Error 12057 connecting to
warn HTTP: Error 12002 connecting to The operation timed out 
error Could not make an HTTP connection.
error Could not make an HTTPS connection.



This all "smells" like the effects of a hijackware infection, Jim. You should have that System Tools option available (unless IE8 was "pushed" to computers via your IT Department with a GPO in place to make it unavailable).

The above notwithstanding...

Error message after you install a Windows Internet Explorer update from Windows Update or from Microsoft Update: "Webpage cannot be displayed":

If tweaking your firewall's settings don't help, try the following:

1. Disable your anti-virus application, all Norton Add-ons (if any), any real-time protection provided by an anti-spyware application (except for Windows Defender; includes Spybot Tea Timer, SpySweeper Guards, Ad-Aware Ad-Watch & Guard, etc.), disable any third-party firewall AND THEN enable the Windows Firewall.

NB: You're "working without a net" now: Don't to ANYTHING else online (e.g., browsing; reading email; chatting) except #4 below until your anti-virus application has been re-enabled!  If you're running ZA Free firewall, you may need to uninstall it instead of disabling it.

2. WinXP: Uninstall "Security Update for Windows Internet Explorer 7 [or 8] (KB978207)" via Add/Remove Programs (make sure Show Updates box is checked at top right) and reboot.

Vista: Uninstall "Cumulative Security Update for Internet Explorer 7 [or 8] for Vista (KB978207)" or "Security Update for Microsoft Windows (KB978207)" via Start | Control Panel | System And Maintenance (If you are using Classic View, skip this step) | Windows Update | View Update History (or Programs & Features | Installed Updates) & reboot.

3. Re-do #1 above. THIS IS IMPORTANT!!

4. WinXP: Go to | Select CUSTOM and scan | Install any Critical Security Updates offered (e.g., KB978207).  If a Root Certificates update is listed in the Optional Software updates category on the left-hand side of the scan results window, install it to take full advantage of IE's enhanced security.

Vista: Run Windows Update manually and install any Important updates offered (i.e., KB978207).

5. Reboot & make sure everything in #1 above is enabled again and, if applicable, disable the Windows Firewall and enable (or reinstall) your third-party firewall.


Visit the Microsoft Virus Solution and Security Center for resources and tools to keep your PC safe and healthy. If you are having issues with installing the update itself, visit Support for Microsoft Update for resources and tools to keep your PC updated with the latest updates. 

For enterprise customers, support for security updates is available through your usual support contacts.

~Robear Dyer (PA Bear) ~ MS MVP (IE, Mail, Security, Windows & Update Services) since 2002 ~ Disclaimer: MS MVPs neither represent nor work for Microsoft
~Robear Dyer (PA Bear)
Microsoft MVP (Windows Client) since October 2002

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Views: 3,421 Last updated: February 24, 2018 Applies to: