Scenario: You might not be able to delete a Web application. You might receive the following error message: "Microsoft.SharePoint.Administration.SPWebservice named "". Rename your object or delete the existing object." Here is a screenshot:
The solution is to delete your Web application...
Go to Central Administration --> Monitoring --> Check Job Status Click Job Definitions under timer links on the left Delete the job with the name in quotes (i.e. 'Unprovisioning SharePoint - 8888')
You should now be able to delete the web application..
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