[Question]: "Microsoft.Playwright assembly was found, but is missing required assets." - showing while trying to download browser binaries.

Your question

Trying to download browser binaries using playwright.ps1 install , but it shows Microsoft.Playwright assembly was found, but is missing required assets. Please ensure to build your project before running Playwright tool. Even after building my dotnet project the result is same as this.

Any kind of help will be apricated, thanks.

[paulsuart]

As @gaelj mentioned, adding this to the .csproj file that references playwright will do the trick:

<PropertyGroup>
  <PlaywrightPlatform>all</PlaywrightPlatform>
</PropertyGroup>

I was building on Windows, copying files in a docker build and attempting to run pwsh playwright.ps1 install chromium on Linux and getting the error reported by the OP.

Adding <PlaywrightPlatform>all</PlaywrightPlatform> solved it.

[milkyjoe90]

As @gaelj mentioned, adding this to the .csproj file that references playwright will do the trick:

<PropertyGroup>
  <PlaywrightPlatform>all</PlaywrightPlatform>
</PropertyGroup>

I was building on Windows, copying files in a docker build and attempting to run pwsh playwright.ps1 install chromium on Linux and getting the error reported by the OP. Adding <PlaywrightPlatform>all</PlaywrightPlatform> solved it.

This helped me. Thank you! I lost 6 hours searching for this solution.

This has also solved the problem for me - it appears to have been introduced in 1.33.0, 1.32 and below were all fine without this entry.