# "The Stardog server is not responding." error in Stardog Studio

**URL:** <https://community.stardog.com/t/the-stardog-server-is-not-responding-error-in-stardog-studio/3423>\
**Category:** Stardog Studio\
**Created:** [December 20, 2021, 5:48pm UTC](https://community.stardog.com/t/the-stardog-server-is-not-responding-error-in-stardog-studio/3423 "2021-12-20T17:48:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![TimK](https://avatars.discourse-cdn.com/v4/letter/t/da6949/32.png) [@TimK](https://community.stardog.com/u/TimK)\
**Post date:** [December 20, 2021, 5:48pm UTC](https://community.stardog.com/t/the-stardog-server-is-not-responding-error-in-stardog-studio/3423/1 "2021-12-20T17:48:09Z")

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Hi,  
I had been using Stardog and Stardog Studio for about two week. I last using it on Thursday (12/16/21) - version 7.8.0.  
Today, I am unable to connect to Stardog server from Stardog Studio.  
I have tried updating to 7.8.2 and reinstalling Stardog.  
From stardog.log it looks like the server is running file:  
Stardog server 7.8.2 started on Mon Dec 20 12:38:08 EST 2021.

Stardog server is listening on all network interfaces.  
HTTP server available at [http://localhost:5820](http://localhost:5820).

STARDOG=/opt/stardog/bin/..

STARDOG\_HOME=/var/opt/stardog/

INFO 2021-12-20 12:38:08,787 [main] com.complexible.stardog.cli.impl.ServerStart:call(266): Memory options  
INFO 2021-12-20 12:38:08,787 [main] com.complexible.stardog.cli.impl.ServerStart:call(267): Memory mode: DEFAULT{Starrocks.dict\_block\_cache=10, Starrocks.block\_cache=20, Native.starrocks=70, Heap.dict\_value=50, Starrocks.txn\_block\_cache=5, Heap.dict\_index=50, Starrocks.memtable=40, Starrocks.untracked\_memory=20, Starrocks.buffer\_pool=5, Native.query=30}  
INFO 2021-12-20 12:38:08,788 [main] com.complexible.stardog.cli.impl.ServerStart:call(268): Min Heap Size: 2.0G  
INFO 2021-12-20 12:38:08,788 [main] com.complexible.stardog.cli.impl.ServerStart:call(269): Max Heap Size: 1.9G  
INFO 2021-12-20 12:38:08,788 [main] com.complexible.stardog.cli.impl.ServerStart:call(270): Max Direct Mem: 1.5G  
INFO 2021-12-20 12:38:08,789 [main] com.complexible.stardog.cli.impl.ServerStart:call(271): System Memory: 63G

I am out of troubleshooting ideas. Are there Stardog Studio logs anywhere?  
Thanks,  
Tim

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**Author:** ![Alex\_Bigelow](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.stardog.com/alex_bigelow/32/1212_2.png) [@Alex\_Bigelow](https://community.stardog.com/u/Alex_Bigelow)\
**Post date:** [December 20, 2021, 6:18pm UTC](https://community.stardog.com/t/the-stardog-server-is-not-responding-error-in-stardog-studio/3423/2 "2021-12-20T18:18:44Z")

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Hi Tim, thanks for the report!

If you're trying to connect to [http://localhost:5820](http://localhost:5820) from [https://stardog.studio](https://stardog.studio), are you also seeing an error about enabling SSL?

If an SSL mismatch isn't the issue, there might be some clues as to what's going on in the browser's Developer Tools (Control or Command + Shift + I), either error messages in the Console tab, or failed requests in the Network tab.

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**Author:** ![TimK](https://avatars.discourse-cdn.com/v4/letter/t/da6949/32.png) [@TimK](https://community.stardog.com/u/TimK)\
**Post date:** [December 21, 2021, 9:53am UTC](https://community.stardog.com/t/the-stardog-server-is-not-responding-error-in-stardog-studio/3423/3 "2021-12-21T09:53:28Z")

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Alex,  
Thanks for your response.  
This is a bit embarrassing. I'm not sure what the problem was, but I am now able to connect.  
Sorry for the unnecessary issue.  
-Tim