Could not load file or assembly CefSharp

[phuocminh6464]

I have a WPF net core project and it's using CEF ChromiumWebBrowser, in the debug mode it run ok. Then I create Setup Project to make file msi file for client but it has error "File 'CefSharp.Core.Runtime.dll' of project output 'Publish Items from CommunicateWithWeb (Active)' targeting 'x64' is not compatible with the project's target platform 'x86'" while building. After I change TargetPlatform of Setup Project to x64, build is successfully. Then I run msi file to install app in my PC but I can't open this app by clicking exe file. I open event viewer and error is like picture below.

I tried to installed Orca and see that CefSharp assembly is already included in .msi file as picture below

Anyone can help me this problem? Any comment is also important for me. Thank you.

Note: I use VS2022 64bit, Win10 64bit, Net 6.0, CefSharp.WPF.NETCore ver 108.4.130. I also install MS Visual C++ 2015-2022 Redistributable (both x64 and x86) ver 14.34.31931. I set platform = "x64" when build Setup Project in Release mode

[amaitland]

In future please use Discussions to ask support related questions.

Looks like you've already asked this at https://stackoverflow.com/questions/74927986/could-not-load-file-or-assembly-cefsharp
I'd also ask that you ask your question just once and wait for a reply. Posting in multiple locations creates extra work. You need to post a link on your stackoverflow question to this discussion now.

I tried to installed Orca and see that CefSharp assembly is already included in .msi file as picture below

Did you check your installer contains all the required files? https://github.com/cefsharp/CefSharp/blob/master/NuGet/PackageReference/Readme.txt#L25

There's also a list at https://github.com/cefsharp/CefSharp/wiki/Output-files-description-table-%28Redistribution%29

Have you checked the installation folder to confirm that the files are actually there? This will likely be easier than digging through the msi.

Net 6.0, CefSharp.WPF.NETCore ver 108.4.130

Did you set a RuntimeIdentifier as per the post install instructions?

If you've installed VC++ then the most likely problem is your installer is missing some of the dependencies.

Then I create Setup Project to make file msi file for client but it has error "File 'CefSharp.Core.Runtime.dll' of project output 'Publish Items from CommunicateWithWeb (Active)'

If you've set a RuntimeIdentifier and still having problems then you'll need to provide an example that reproduces the problem. You can fork the https://github.com/cefsharp/CefSharp.MinimalExample and push your changes to GitHub (no zip files, I won't open them).

[amaitland]

Does the msi install your application into Program Files? If yes try copy the installed application into a temp directory that has write permissions.

Can you answer my question and perform the test if appropriate please.

Please use version 108 for the testing. The sooner I understand how to reproduce the problem the better.

[phuocminh6464]

Does the msi install your application into Program Files? If yes try copy the installed application into a temp directory that has write permissions.

Yes, the msi install my application into Program Files folder. You are right, when I copy the installed application into a temp directory that has write permissions (Disk D), app is working normally (I'm testing with version 108.4.13)

[amaitland]

Yes, the msi install my application into Program Files folder. You are right, when I copy the installed application into a temp directory that has write permissions (Disk D), app is working normally (I'm testing with version 108.4.13)

Thank you. Very helpful.

Did you set CefSettings.CachePath? I suspect the problem only occurs when no CachePath is set and the application folder is read only.

There's an example at https://github.com/cefsharp/CefSharp/wiki/General-Usage#initialize-and-shutdown

[phuocminh6464]

Perfectly, this is my fault. After I set CachePath in App.xaml.cs file, app is working right now with ver 108 and install files are still in Program Files folder

[amaitland]

Perfectly, this is my fault

It's a bug in CEF. It should work without setting a CachePath.

I can now reproduce the issue reliably using the CEF Sample Application(cefclient) and have reporting my findings at https://www.magpcss.org/ceforum/viewtopic.php?f=6&t=19318#p53037

Thanks for testing 👍