# Reachable via browser - apps not connecting

**URL:** <https://forum.mattermost.com/t/reachable-via-browser-apps-not-connecting/14872>\
**Category:** Troubleshooting\
**Created:** [January 24, 2023, 1:35pm UTC](https://forum.mattermost.com/t/reachable-via-browser-apps-not-connecting/14872 "2023-01-24T13:35:50Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![proxycon](https://avatars.discourse-cdn.com/v4/letter/p/e9bcb4/32.png) [@proxycon](https://forum.mattermost.com/u/proxycon)\
**Post date:** [January 24, 2023, 1:35pm UTC](https://forum.mattermost.com/t/reachable-via-browser-apps-not-connecting/14872/1 "2023-01-24T13:35:50Z")

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This is more a solution post, as I could find a post similar to my problem and figured a very easy solution.

I set up a mattermost omnibus instance (but I assume this would be valid for any instance) without SSL/TLS. It worked perfectly via browser, but I could not connect with any app (desktop or mobile). What fixed the problem for me was allowing port 80/443 even though mattermost only runs on port 8065. Maybe the apps send some additional requests before connecting.