The Massachusetts Appeals Court has affirmed a preliminary injunction against Option One Mortgage Corp. and H&R Block Mortgage Corp., subprime lenders that originated thousands of loans in Massachusetts, according to the attorney general’s office.

The preliminary injunction, issued by then Judge Ralph D. Gants in Suffolk Superior Court last November, prohibited Option One and American Home Mortgage Servicing, Inc. from initiating or advancing foreclosures on mortgage loans that the court found to be presumptively unfair.