Uploading big files with .net core 2.1 and Azure

Question

Can you please help, have the next problem:

Can't upload a big file(~200 MB) to the website. Using .net core 2.1 project and Azure blob. So find that I should set up

<system.web>
  <httpRuntime maxRequestLength="1048576" executionTimeout="100000"/>
</system.web>

and

<requestLimits maxAllowedContentLength="1073741824" />

in web.config, but couldn't set it up, so find that i could do it in applicationhost.config

After that in works in local machine, but when deploying the project to Azure it failed and show error: "The resource you are looking for has been removed, had its name changed, or is temporarily unavailable."

Can you please advise what can be problem? Should i setup anything in Azure for upload big files? Or how correct setup web.config(i can't find it in my project)?

Thanks!