[Problem/Bug]: The new (12/07/2023) Webview2 update breaks ActiveX.

[rgoodman1977]

What happened?

We have been using Webview2 and MSHTML together for years now. Our program depends heavily on ActiveX to operate correctly. With the new update it works until you do anything which dynamically loads the WebView2 runtime. After that, all of the ActiveX controls won't load.

Importance

Blocking. My app's basic functions are not working due to this issue.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

120.0.22.10.61

SDK Version

1.0.2151.40

Framework

Win32

Operating System

Windows 11

OS Version

Not applicable - reported on windows 10 and 11

Repro steps

You would need a copy of our product which I would supply...
Once you have the product installed open it... Open an appointment, try to log into Zoom (which loads WebView2). After that nothing works

Repros in Edge Browser

No

Regression

Regression in newer Runtime

Last working version (if regression)

119.0.2151.97

[rgoodman1977]

This is similar to #4226. It is slightly different in that once the WebView2 is loaded and unloaded, I get calls to IInternetSecurityManager::ProcessUrlAction() (MSHTML) for
URLACTION_DOWNLOAD_SIGNED_ACTIVEX which I've never seen before.

[pontusn]

The unexpected call could originate from failure to create an ActiveX that is referred via URL.

[pontusn]

I used this tool to unveil details for revoked class factories:
http://www.rohitab.com/apimonitor

[victorhuangwq]

Do you have any crash dumps to share?

[rgoodman1977]

No , nothing crashes, just the active x controls all come up blank. I coded a fix based on the comments on 4226 for now.
(Use CoResumeClassObjects to revert suspended state)... I assume Microsoft is going to fix this soon?

[rgoodman1977]

Your fix to #4226 (tested with Edge Canary) fixes this problem. Thanks!

[fabiorocha]

@rgoodman1977 thanks for submitting this issue and connecting the dots between this and the other issue. As noted in #4226, Edge Stable should also be updated with the fix over the next couple of hours.