markperl1

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Right after I wrote in with the question I started setting up a new computer, and had the same problem. Between your reply and the issue with the 2nd computer, I realized I'd forgotten (it had been so long since I'd needed to do that!) that I needed to install the security certificate for the firewall.<br />
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Problem solved!<br />
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Thank you for your quick reply!<br />
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Mark
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glad I was able to stimulate some thought to your answer, and were kind enough to reward me with points even though I did not give the direct answer to your question.
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For reasons that aren't relevent, I had to wipe out a Windows 10 installation and do a clean install after deleting the existing partitions. Installed Win10 Pro v1909 downloaded from MS. After the install was finished, got the invalid CA error for MSN.com as soon as I opened the Edge browser!<br />
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The computer's date is correct.<br />
<br />
How could I get an error on a fresh installation?<br />
<br />
HELP!<br />
<br />
Mark
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For reasons that aren't relevent, I had to wipe out a Windows 10 installation and do a clean install after deleting the existing partitions. Installed Win10 Pro v1909 downloaded from MS. After the install was finished, got the invalid CA error for MSN.com as soon as I opened the Edge browser!

The computer's date is correct.

How could I get an error on a fresh installation?

HELP!

Mark

DLG_FLAGS_INVALID_CA

Windows 10 is a personal computer operating system featuring the "universal application architecture" (UAP); apps can be designed to run across multiple devices with nearly identical code, including PCs, tablets, smartphones, embedded systems, Xbox One, Surface Hub and HoloLens. Windows 10 also includes a virtual desktop system, a window and desktop management feature called Task View, the Microsoft Edge web browser, support for fingerprint and face recognition login, voice-based search (Cortana), new security features for enterprise environments, and DirectX 12 and WDDM 2.0 to improve the operating system's graphics capabilities for games.

Windows 10

Installation is the act of making a computer program program ready for execution. Because the process varies programs often come with a specialized program responsible for doing whatever is needed for their installation. Installation may be part of a larger software deployment process. Cross platform installer builders that produce installers for Windows, Mac OS X and Linux include InstallAnywhere, InstallBuilder and Install4J. Installers for Microsoft Windows include Windows Installer, InstallShield, and Wise Installation Studio; free installer-authoring tools include NSIS, IzPack, Clickteam, InnoSetup, InstallSimple and WiX. Mac OS X includes Installer, and also includes a separate software updating application.

Installation

This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.