Hello, sajad alizade !
Are there countries where Microsoft products and cloud services may not be accessed?
Unfortunately this is a legal issue as opposed to a technical issue so I'm limited in how much I can help with this question. What I can say is that the Microsoft Exporting Products FAQ has the most up to date information on this subject, as well as links to the corresponding documents (including the OFAC Iran Sanctions Resource Center in this case) and contact information. This is the best available resource for answering your question and the most complete answer we can give on Microsoft Q&A at this time.