Microsoft Corp. (Nasdaq: MSFT) says it will have a writedown of $6.2 billion in its online services division, mostly related to its 2007 acquisition of AQuantive Inc.

The software company will record the non-cash, non-tax- deductible charge for the fourth quarter of fiscal 2012, Redmond, Washington-based Microsoft said Monday in a statement.

“While the Online Services Division business has been improving, the company’s expectations for future growth and profitability are lower than previous estimates,” Microsoft said in the statement.

The acquisition failed to accelerate growth to the extent Microsoft had anticipated, the company said.