Windows 7 IIS Error - Service unavailable 503

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Greetings fellow humans.


I have developed an ASP.NET Web API application and published using the File system approach. I also had verified if the application points to the correct application pool and set "Load User Profile" to false. This certainly does not work. Kindly find herewith error log from my C:/Windows/System32/LogFiles/HTTPERR file as below.


#Software: Microsoft HTTP API 2.0
#Version: 1.0
#Date: 2019-09-13 15:09:28
#Fields: date time c-ip c-port s-ip s-port cs-version cs-method cs-uri sc-status s-siteid s-reason s-queuename
2019-09-13 15:09:27 ::1%0 50143 ::1%0 80 HTTP/1.1 GET / 503 - N/A -
2019-09-13 15:10:05 ::1%0 50152 ::1%0 80 HTTP/1.1 GET /favicon.ico 503 - N/A -
2019-09-13 15:23:07 ::1%0 50405 ::1%0 80 HTTP/1.1 GET / 503 - N/A -
2019-09-13 15:23:07 ::1%0 50406 ::1%0 80 HTTP/1.1 GET /favicon.ico 503 - N/A -
2019-09-13 15:23:07 ::1%0 50409 ::1%0 80 HTTP/1.1 GET / 503 - N/A -
2019-09-13 15:23:07 ::1%0 50410 ::1%0 80 HTTP/1.1 GET /favicon.ico 503 - N/A -
2019-09-13 15:26:13 ::1%0 50417 ::1%0 80 HTTP/1.1 GET /Officeman 503 - N/A -
2019-09-13 15:26:15 ::1%0 50418 ::1%0 80 HTTP/1.1 GET /favicon.ico 503 - N/A -
2019-09-13 15:29:03 ::1%0 50429 ::1%0 80 HTTP/1.1 GET /Officeman 503 - N/A -
2019-09-13 15:29:06 ::1%0 50430 ::1%0 80 HTTP/1.1 GET /favicon.ico 503 - N/A -
2019-09-13 15:32:44 ::1%0 50705 ::1%0 80 HTTP/1.1 GET /Officeman 503 - N/A -
2019-09-13 15:32:47 ::1%0 50706 ::1%0 80 HTTP/1.1 GET /favicon.ico 503 - N/A -
2019-09-13 15:38:50 ::1%0 50882 ::1%0 80 HTTP/1.1 GET /Officeman 503 - N/A -
2019-09-13 15:38:50 ::1%0 50883 ::1%0 80 HTTP/1.1 GET /favicon.ico 503 - N/A -

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