New Delhi, July 28 -- IT services giant Microsoft Corp has suspended services to Russian oil major Rosneft-backed Nayara Energy Ltd after the European Union's (EU) sanctions on Moscow.

Following the suspension of Microsoft services, the Indian oil refinery company on Monday sued the US tech giant in the Delhi High Court.

"Nayara Energy has initiated legal proceedings against Microsoft following the abrupt and unilateral suspension of critical services. Microsoft is currently restricting Nayara Energy's access to its own data, proprietary tools, and products - despite these being acquired under fully paid-up licences," the company said in a statement.

"This decision, based solely on Microsoft's unilateral interpretation of recent Europe...