# Apps stopped working **URL:** \ **Category:** Support and Troubleshooting\ **Created:** [April 15, 2025, 9:52am UTC](https://community.umbrel.com/t/apps-stopped-working/22300 "2025-04-15T09:52:52Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![lionzo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.umbrel.com/lionzo/32/7084_2.png) [@lionzo](https://community.umbrel.com/u/lionzo)\ **Post date:** [April 15, 2025, 9:52am UTC](https://community.umbrel.com/t/apps-stopped-working/22300/1 "2025-04-15T09:52:52Z")
Umbrel was working perfectly until the end of last week when I couldn’t open bitcoin core. I restarted the server to see if it would come back and now it won’t open any app. The message that appears is: **Unable to connect** _Firefox could not establish a connection with the server umbrel.local:2100_ - The site could be temporarily unavailable or too busy. Try again in a few moments. - If you are unable to load any pages, check your computer’s network connection. - If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the web. - If you are trying to load a local network page, please check that Firefox has been granted Local Network permissions in the macOS Privacy & Security settings. ---
**Author:** ![gringoperdido](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.umbrel.com/gringoperdido/32/6998_2.png) [@gringoperdido](https://community.umbrel.com/u/gringoperdido)\ **Post date:** [April 15, 2025, 10:00am UTC](https://community.umbrel.com/t/apps-stopped-working/22300/2 "2025-04-15T10:00:46Z")
Hi @lionzo , have a look at how to ssh into the device and check disk space and memory. You’ll see some others have reported the same or similar issue. ---
**Author:** ![stinger32](https://avatars.discourse-cdn.com/v4/letter/s/278dde/32.png) [@stinger32](https://community.umbrel.com/u/stinger32)\ **Post date:** [April 15, 2025, 2:17pm UTC](https://community.umbrel.com/t/apps-stopped-working/22300/3 "2025-04-15T14:17:36Z")
What are you running Umbrel on? Is it a Pi, mini-PC, Umbrel Home?