Hi Munshat,
Please go back to the Create an Azure Virtual Machine exercise in Unit 3 using the dropdown above the task list. Once there, please Activate a new sandbox, and complete the exercise by copying/pasting. When you have finished all tasks immediately go to Configure network access exercise in Unit 9 and complete all the steps there using copy/paste.
Please note it is essential to complete all the steps in the Unit 3 exercise as well as the Unit 9 exercise in less than an hour after activating the sandbox. If you don't complete them in time you will receive errors and will need to start over with a fresh sandbox.
Please reply back with your results, whether positive or negative. If the above solved the issue you were having please click Accept Answer.
Thanks.
-TP