Following the steps in https://learn.microsoft.com/en-us/visualstudio/python/configure-web-apps-for-iis-windows?view=vs-2019 to configure flask app to run behind IIS and searching online I couldn't find a solution that fix my problem.
I have my web.config as:
<?xml version="1.0" encoding="utf-8"?><configuration><system.webServer><handlers><add name="PythonHandler" path="*" verb="*" modules="httpPlatformHandler" resourceType="Unspecified"/></handlers><httpPlatform processPath="C:\envs\Scripts\python.exe" arguments="-m flask run --port %HTTP_PLATFORM_PORT%" stdoutLogEnabled="true" stdoutLogFile="C:\logs\python.log" startupTimeLimit="60" processesPerApplication="16"><environmentVariables><environmentVariable name="FLASK_APP" value="app.py" /></environmentVariables></httpPlatform></system.webServer></configuration>A visit to the site just spit the following. I tried all possible solutions I came across which include giving IIS_IUSRS access. Running the app on command prompt runs just fine. The IIS error message is not helping.
edit:
after installing the http platformhandler and now on a different dev box, I can see the handler at work but just a different monster:
502.3 Bad GatewayDetailed Error Information:**Module** httpPlatformHandler **Requested URL** http://127.0.0.1:5007/about**Notification** ExecuteRequestHandler **Physical Path** C:\inetpub\wwwroot\app\about**Handler** PythonHandler **Logon Method** Anonymous**Error Code** 0x8007042b **Logon User** AnonymousWhich tells me the handler is just handling the url as just folders in my app root because http://127.0.0.1:5007/about is nothing but a route to:
myapp_about.py:
from flask import Blueprint, jsonifymyapp_about = Blueprint('about', __name__)@myapp_about.route('/about')def get_about(): return jsonify({"wow": "We really are routed to here. maybe not"})