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See:
https://mymce.wordpress.com/2024/05/04/fixing-neterr_connection_reset-in-production/
Getting failed: NET::ERR_Connection_reset in production.
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Brown, Matt
126
Reputation points
I'm getting this error when I uploaded a new site to production. I've looked elsewhere and so far the results point to it being a browser issue except anyone going to the site gets the same error. The site uses SSO, but it never reaches it as it errors out on the first hit. Test server is 2022 and Prod is 2016. Site is 4.5.2 although I can't imagine that being the issue as Prod is 4.6+ and Test is even newer.
Windows for business Windows Server User experience Other
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Brown, Matt 126 Reputation points
2024-05-06T14:36:26.42+00:00 It ended up being I didn't have the certificate tied to the site. I'm still getting a 404 for the site, and I don't see any messages being in the event viewer or in any of the log files. I can go into IIS and do an explore on the site and get the correct directory.
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AgaveJoe 30,126 Reputation points2024-05-06T15:14:42.2233333+00:00 A 404 simply means a resource was not found. Again, we cannot see your code, web application configuration, or the URL that caused the 404. At this point there can be many reasons for the 404...
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AgaveJoe 30,126 Reputation points
2024-05-04T11:13:44.59+00:00 The error is straight forward. The browser is having a problem connecting to the web server. There can be several reasons for the connection error. You'll need to troubleshoot to figure out what causing the connection issue.
We have no idea what server resources you have access to but if you can remote into the web server then try running the application from IIS on server. You can also check logs, event viewer, and IIS configuration.
From a client perspective, you can try to ping the server.
https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/ping
You can also use a network sniffer like Wire Shark to view the low level TCP/IP connection.