aspnet core build slow only when publishing

Question

I have an asp.net core web app. If I click build -> Rebuild, it finishes in just under 15 seconds.

However, if I publish it (via web deploy to azure, FTP to azure, or even just a file system publish to a local folder), it takes a very long time. Over a half hour before I give up and cancel it.

What is different about publishing that could cause this? How can I diagnose this to make it go faster?

I'm not sure if it's relevant, but it spends a long time outputting messages like this:

Added Item(s): ResolvedFileToPublish= C:\filepath\bg6.jpg CopyToPublishDirectory=PreserveNewest RelativePath=wwwroot\images\bg6.jpg TargetPath=wwwroot\images\bg6.jpg

Answer 1

Try the following two ways

1.Try disabling windows defender on the machines where publish is slow to see if it fixes the issue.You could have some exclusions to the real-time protection.

2.Make the following settings in your project： Tools-> Options-> Projects and Solutions -> Build and Run -> MSBuild project build output verbosity