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Helen He 7Helen He 7 

developer console could not fetch container for workspace

Tried to open developer console this morning from my working machine, tried different orgs, all got unknown error. What should I look at to fix the error?
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Best Answer chosen by Helen He 7
Helen He 7Helen He 7
It's caused by our firewall rules.

All Answers

Raj VakatiRaj Vakati
This is a common issue with the console. If for any reason the processing is not completed within the 30s timeout, it will not return. To get around this issue, you need to set the logging levels for your requests to filter out the meaningful logs. Also  a workaround for this issue is to go to file menu and Download Log.

Further for your reference, please refer to below links:
 https://help.salesforce.com/apex/HTViewHelpDoc?id=code_setting_debug_log_levels.htm&language=en_US
 https://help.salesforce.com/apex/HTViewHelpDoc?id=code_dev_console_view_system_log.htm&language=en_US
 https://help.salesforce.com/apex/HTViewHelpDoc?id=code_dev_console_tab_browser_logs.htm&language=en_US
Naveen KNNaveen KN
Have you tried opening the developer console in the same browser window as a new tab instead of a new browser window?

Right click on the developer console and open in a new tab. This works in some of the issues of developer console. Just give a try and share the results. 

Naveen 
Helen He 7Helen He 7
Right click to open in a new tab gives me the same result: 
Helen He 7Helen He 7
It's caused by our firewall rules.
This was selected as the best answer