MicrosoftEdge / MicrosoftEdge/WebView2Feedback
[Problem/Bug]: WebView2 DLLs not being included in release builds (WebView2 not found)
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Since Oct 7, 2025.
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Description
What happened?
Error BC30002: Type 'Microsoft.Web.WebView2.WinForms.WebView2' is not defined.
Debug / Beta builds work fine.
Importance
Blocking. My app's basic functions are not working due to this issue.
Runtime Channel
Stable release (WebView2 Runtime)
Runtime Version
1.0.3485.44
SDK Version
1.0.3485.44
Framework
Winforms
Operating System
Windows 11
OS Version
26100.6584
Repro steps
Using a pipeline in Azure Devops (self hosted agent), the msbuild process is skipping over the dlls required for WebView2 and producing the error below. This doesn't happen in Visual Studio:
##[error]HerdMASTER\Forms\frmAbout.Designer.vb(250,36): Error BC30002: Type 'Microsoft.Web.WebView2.WinForms.WebView2' is not defined.
Repros in Edge Browser
No, issue does not reproduce in the corresponding Edge version
Regression
No, this never worked
Last working version (if regression)
No response
Contributor guide
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First steps
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- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Assessment
This issue has not been assessed yet.