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Linda JenkinsLinda Jenkins 

Developer Console issue

I can't get the Developer Console to work. All the other sys admins in my org have no problems but mine won't run a query. The menu items don't drop down and I get the following error.

Use the Query Editor tab to write and execute SOQL queries. Results are displayed in the Query Results Grid. Use the grid to create, update, and delete data. Take a quick tour...

I am using Chrome and it's up to date. I cleared all History but that hasn't helped either. frozen inoperable dev console
ShashankShashank (Salesforce Developers) 
Can you check if the behavior is same on other browsers like firefox and IE?
Linda JenkinsLinda Jenkins
Hi Shashank,

I have tried Firefox and IE and the Dev Console doesn't work on those either. 
ShashankShashank (Salesforce Developers) 
This issue might be with the workspace. You may have to delete the existing workspaces as a workaround. Please try this and check if this resolves the issue.

Login to work bench (https://developer.salesforce.com/page/Workbench) --> Utilities --> REST explorer and select GET 

/services/data/v29.0/tooling/query/?q=select+id+from+IDEWorkspace 

You will get IDs.

Now select DELETE, and run below:

/services/data/v29.0/tooling/sobjects/ideworkspace/1de90000002HYxhAAG/

Replace above ID with each ID that you get in the query.
Linda JenkinsLinda Jenkins
Thanks Shashank, I will try this. I really appreciate your help.
JeeedeeeJeeedeee
Awesome Shashank, it helped me even today more than 6 years later :) 
Rayudu AddagarlaRayudu Addagarla
Works like a charm! , After a days worth of time struggle. search leads to this page. Thanks Shashank. This March 2021 :)
your post was 2014 .
I changed v29 to v50 though