[Problem/Bug]: Offline installer hangs for about 66 minutes

[mdalgity]

What happened?

The WebView2 offline installer is hanging for about an hour and delaying the completion of an install script. The installer creates a child process MicrosoftEdgeUpdate.exe that terminates after about 66 minutes (PID 4032 in attached logs). The process seems to be executing the following:
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping {with a bunch of Base64 data}

See attached data from ProcessMonitor and logs.
MicrosoftEdgeUpdate.log
msedge_installer.log

webview2_installer_PID4032.zip

Background: The offline installer is being launched by a Power Shell script during Windows setup in the Specialize phase using the following command:
Start-Process -NoNewWindow -Wait -FilePath ".\Microsoft\MicrosoftEdgeWebView2RuntimeInstallerX64.exe" -ArgumentList "/silent /install"

Importance

Important. My app's user experience is significantly compromised.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

122.0.2365.92

SDK Version

No response

Framework

Other

Operating System

Windows 10

OS Version

10.0.19045 Build 19045

Repro steps

On an offline system, install using offline installer using power shell command:
Start-Process -NoNewWindow -Wait -FilePath ".\Microsoft\MicrosoftEdgeWebView2RuntimeInstallerX64.exe" -ArgumentList "/silent /install"

I happen to be scripting this install during the Windows Setup specialize phase however I do not know if that is a factor.

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

Don't know

Last working version (if regression)

No response

AB#49706548

[LiangTheDev]

Created an internal tracking bug and Edge deployment team is looking into it.