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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?

All Answers
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
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