HTTP Error 500.37 - ANCM Failed to Start Within Startup Time Limit - Still not resolved after increasing Startup Time Limit

Question

I am attempting to deploy new services to Azure App Service and am getting the following error message on the services:

After doing some research, it seems the most common approach to this problem is to increase the startupTimeLimit, which I have done a couple times and is not resolving this issue.

Here is the section of the web.config file containing the startupTimeLimit increase:

      <aspNetCore processPath="bin\Debug\netcoreapp3.1\TemplateService.Api.exe" arguments="" stdoutLogEnabled="false" hostingModel="InProcess" startupTimeLimit="900">
        <environmentVariables>
          <environmentVariable name="ASPNETCORE_ENVIRONMENT" value="Development" />
        </environmentVariables>
      </aspNetCore>

I originally attempted to increase to 300 seconds but that didn't fix it, so I went ahead and upped it to 900 seconds just to see if I could get past this error (which I didn't).

Are there any other ways to resolve this issue if this increase is not fixing it?

If my reply is helpful, please accept it as answer(click on the mark option beside the reply to toggle it from greyed out to fill in.), see https://meta.stackexchange.com/questions/5234/how-does-accepting-an-answer-work — Jason Pan, Sep 10 '21 at 07:03

score 0 · Answer 1 · answered Sep 10 '21 at 02:08

Please restore your web.config to its original state. The settings of

<environmentVariable name="ASPNETCORE_ENVIRONMENT" value="Development" />

are not required.

I can't tell you the reason directly, but I can help you find the error log of the problem. When you see the error log, you can search for it by google to solve the problem.