Windows 10: Update Problem -> Certificate Issue - Cannot Detect Proxy Settings

DELL Precision 7520 laptop running Windows 10 Pro (version 1803, build 17134.556) 64-bit.
CPU is intel Core i7; GPU is Intel HD Graphics 630 & NVIDIA Quadro M1200. Both WiFi & Ethernet.
Latest updates installed are: KB4023057 (failed several times); KB4462157.

Problem is that a certain web site with a certificate-secured page cannot be accessed by EDGE, IE, CHROME or FIREFOX. It WAS accessible prior to failed update(s).

Network Troubleshooter reports:
"Windows could not automatically detect this network's proxy settings."
(pane on right shows 'detected' and a yellow triangle with ! inside)

HOWEVER, I can start VirtualBox and launch a UBUNTU 18.10 VM and access the desired page with FIREFOX.
ALSO, this page is accessible from numerous other machines including Win10, Win7, UBUNTU, etc.
It's clear to me that this issue lies within WIndows 10 on this machine only!

I attempted SYSTEM RESTORE from two most distant RestorePoints but both failed, even after disabling the Antivirus product I run on this machine (BitDefender).

I can of course restore the hard drive image as it left manufacturing but that leads to a whole bunch of work.
I don't start this laptop every day; indeed, it may sit idle for a week or more between boots.

It's clear to me the problem lies within windows networking but after that, I give.

I'd be grateful for any suggestions as to how to cure this issue.

:)

 

Windows could not automatically detect this networks proxy settings

Hi,

There are various reasons why you're getting such error message. Slow internet connections or network issues are possible causes of it. Kindly provide us the following details so we can isolate your concern:

• How did you get this error message?
• Are you connected to the internet using wireless or wired connection?
• Have you tried other devices to check if the same issue occurred?

Since you have followed all the steps in the article provided above, let's check if your computer's Network proxy settings are configured correctly by following these steps:

• Type Proxy in the search box on the taskbar, and then click on
  Network proxy settings.
• Under Automatic Proxy setup, set Automatically detect settings bar to ON.
• Under Manual Proxy settings, set Use a proxy server bar to OFF.
• Click on Save.

Let us know if it works.

 

Can't fix "windows could not automatically detect this networks proxy settings"

Hi Seismicdude,

Thank you for the detailed description of your problem and for sharing the steps that you've already tried. Getting the error Windows could not automatically detect this network's proxy settings may have something to
do with the Internet Settings, the TCP/IP settings, or could be caused by the antivirus installed on your computer.

Disable or uninstall antivirus software

• Some antivirus software causes issues with proxy in Windows 10. If you have other antivirus software installed on your computer other than Windows Defender that comes with Windows 10, I suggest that you temporarily
  disable or uninstall it for us to isolate the problem. If removing it resolves the issue, then it definitely is causing the problem. You can utilize Windows Defender to protect your computer.

Change proxy settings

1. Navigate to Settings > Network & Internet.
2. In the left pane, click Proxy.
3. Under Automatic proxy setup, toggle off Automatically detect settings.

Reset TCP/IP

1. Right-click Windows key and select
   Command Prompt (Admin).
2. In the command prompt window, type in
   netsh int ip reset resetlog.txt and press
   Enter.
3. Restart your computer and see if it works.

Reset Internet Settings

1. In Cortana search, type in Internet Options, and select it from the search results.
2. Click the Advanced tab, then click
   Reset. (Deleting personal settings is optional.)
3. Click Apply, then
   OK.

If you have additional questions, or if the issue persists after the troubleshooting steps above, please let me know by replying to this thread. This way, I'll get notified and respond back to you as soon as I can.

Regards.

 

Windows could not automatically detect this networks proxy settings

Alvin - have just seen this reply (2100 GMT London), and want to thank you for your prompt and helpful response to my initial post. Although the problem is solved (see my other post) I am nevertheless going to to go through your procedure to see if indeed
my proxy settings are now set as they should be. I will post the result. David