According IAS 38-intangible assets are following criteria is to recognize license
1) Intangible is identifiable
2) Power to obtain benefits from the assets
3) Future economic benefit is expected.
If following criteria met then you can capitalize Microsoft license.
Further it need to consider that software is for one year or more than one year, if license is granted for more than one year then it would be recognized as non current assets. And will be amortized as per company policy. the capitalization of assets is also need to consider the organization's policy for the recognition of assets and expenses, however some companies have set the certain limits for the capitalization. Example: company has set the policy that an assets having cost amount $50 will be recognized as expense then it should be expenses out if the cost of an asset is upto $50.