Flask app getting 0x8007000d error with IIS

Question

Flask app getting 0x8007000d error with IIS

I'm trying to get a very basic flask app to work on IIS 10 running on Windows Server 2019. I followed the HTTPPlatform Handler instructions from: https://docs.microsoft.com/en-us/visualstudio/python/configure-web-apps-for-iis-windows?view=vs-2019

But I keep getting HTTP 500.19 errors with error code 0x8007000d. From googling, I suspect the problem is in my web.config, but I don't know what is wrong. The app works fine from the command line. This is my web.config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <system.webServer>
    <handlers>
      <add name="PythonHandler" path="*" verb="*" modules="httpPlatformHandler" resourceType="Unspecified"/>
    </handlers>
    <httpPlatform processPath="D:\python39\python.exe"
                  arguments="D:\inetpub\wwwroot\flasktest.py"
                  stdoutLogEnabled="true"
                  stdoutLogFile="d:\logs\python.log"
                  startupTimeLimit="60"
                  processesPerApplication="16">
      <environmentVariables>
        <environmentVariable name="SERVER_PORT" value="9010" />
      </environmentVariables>
    </httpPlatform>
  </system.webServer>
</configuration>

This is my app.py:

from flask import Flask, render_template

app = Flask(__name__)
#app.debug = True

@app.route("/", methods=('GET', 'POST'))
def home():
  return render_template('main.html', hello = 'hello world')

if __name__ == '__main__':
    app.run(host='0.0.0.0',port=9010)

this is my main.html

{% extends 'layout.html' %}
{% block content %}
  <div class="container">
    <div class="leftrow1">
      {{ hello }}
    </div>
    <div class="leftrow2">
    </div>
    <div class="leftrow3">
    </div>
    <div class="leftrow4">
    </div>

    <div class="main_frame_1">
    </div>
    <div class="main_frame_2">
    </div>
  </div>
{% endblock content %}

and this is the layout.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
    <link rel="stylesheet" type="text/css" href="/static/css/style.css"/>
</head>
<body>
  {% block content %} 
  {% endblock content %}
</body>

Update: based on comments received, adding additional error info This is the error I get (without installing httpplatformhandler), nothing is in eventlog when this occurs:

This is the error I get after installing httpplatformhandler:

with the 500.3 message, I also get a bunch of event 1000 from HttpPlatformHandler in event log:

flask

iis

asked on Stack Overflow Nov 24, 2020 by

Ching Liu • edited Nov 25, 2020 by

Ching Liu

1 Answer

It seems that you don't have the correct permission to access D:\python39\python.exe and D:\inetpub\wwwroot\flasktest.py.

Open IIS Manager -> Select the site you added the HttpPlatformHandler
Click Handler Mappings in the feature view -> select the HttpPlatformHandler
Click Edit Feature Permission in the Action Panel
Make sure you have check the Execute permission

answered on Stack Overflow Nov 26, 2020 by

samwu

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