1,102 questions
Visual Studio 2022 Blocks itself on Build when running without debugging
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Sam Talbot
1
Reputation point
Even when running VS as an admin, I'm getting errors when trying to build when "start without debugging" is going on.
I used to be able to do this for the last several versions of VS (and still can in VS 2019), so I don't understand why this functionality is broken.
A little more background:
I have a solution with 3 parts: a blazor server web project, a class library project, and a webapi project.
I have set "multiple startup projects" and selected "start" for both the web api and blazor server.
Then I press control + F5 to get it to "start without debugging"
All is working well until I go to make a few changes (start building stuff in the application - adding blazor components/pages, etc. Then try to rebuild.
During the rebuild, I'll get the message: MSB3021 (The process cannot access the file 'bin\debug...' because it is being used by another process.
I've turned off hot reload, it still behaves this way.
What am I doing wrong.
Developer technologies Visual Studio Debugging
{count} votes
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Tianyu Sun-MSFT 34,436 Reputation points Microsoft External Staff2022-01-12T08:52:17.003+00:00 Hi @Sam Talbot , if you try to delete the
.vs,binandobjfolders, and then close all VS instances, after that restart VS and run the project, will it work? Please also try to reboot your machine and test again. -
Sam Talbot 1 Reputation point
2022-01-12T14:35:07.523+00:00 Thanks for the help, but I can't delete the bin folders because the application is running. (I like to start the application without debugging, and keep building it as I go - attaching the debugger when I need help from the debugger.
I was able to do this (and can still do this) in VS 2019. However, I've noticed now that when I start an app without debugging (Ctrl + F5), it launches .cmd windows in addition to the web browser windows.
I have tried restarting my computer, but I get the same result.
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Sam Talbot 1 Reputation point
2022-01-12T14:37:48.767+00:00 Here is an image of the two open .cmd windows I mentioned.
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Sam Talbot 1 Reputation point
2022-01-12T14:48:01.267+00:00 Here is a github link for the sample project where this is happening: https://github.com/SamTalbotFMC/BlazorServerWithDedicatedAPI
To reproduce the issue, simply clone, launch VS 2022, Ensure that both the .api and .web projects are set as start up projects and hit Ctrl + F5 to start both without debugging.
Then, make some changes to one of the projects (add somebody to the person list, or add a blazor component or page), try to build and note that it won't build because "it is being used by another process"Thanks in advance!
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Tianyu Sun-MSFT 34,436 Reputation points Microsoft External Staff
2022-01-20T03:12:57.043+00:00 Hi @Sam Talbot , sorry for delay in reply. Thanks for sharing me the sample, I can reproduce this issue in VS 2022. I’d like to also test this in VS 2019, and confirm whether this works in VS 2019. But it seems the sample you shared with me is based on .NET 6.0 and doesn’t work in VS 2019. Is it possible for you to share me a sample that could work in VS 2019?
Feel free to contact me.
Best Regards,
Tianyu
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