Resources for software vendors
Vendor dispute form

If you are the vendor of a product that you believe has been incorrectly classified as spyware or other unwanted software, or if you have recently updated the behavior of your product and want to have it reclassified, you can contact our research division with your concerns. Fill out and submit this Vendor Dispute Report form.

False Positive form

If you believe that Windows Defender (Beta 2) has mistaken your program for another program, fill out and submit this False Positive Report form.

Download Windows Defender (Beta 2)