Minifilter Altitude Request
A request for an minifilter altitude assignment is sent to Microsoft as an email. The body of the email must contain the following fields and corresponding information.
|Product/Filter description:||A one paragraph summary to help Microsoft determine an appropriate altitude for the filter.|
|Filter type:||One of these values: Registry, FileSystem, Both|
|Filter start-type:||One of these values: Boot, System, Auto, Demand|
|Requested filter load order group:||See the File System Minifilter Allocated Altitudes for available load order groups.|
|Requested altitude:||Microsoft reserves the right to assign an altitude that is different from the requested altitude, depending on altitude availability and the filter driver functionality.|
|Additional information:||Use this field to let us know if there is any information you would like Microsoft to consider when assigning an altitude to this filter.|
Send this information in an ASCII text e-mail message to email@example.com with the subject: “Minifilter altitude request”. An altitude for this filter will then be e-mailed back to the specified contact e-mail address.
The following is an example for the body of an allocation request email.
Hi, Below is the request information to assign an altitude for our Contoso DataKleen file system minifilter. Company name: Contoso Ltd. Contact e-mail: firstname.lastname@example.org Product name: Contoso DataKleen Product URL: http://fsfilters.contoso.com Product/Filter Description: The Contoso DataKleen filter removes all occurences of any byte having a value between 128 and 255 during file reads. Our minifilter removes this value since it is not displayable on TTY devices. Filter filename: ContosoDK.sys Filter type: FileSystem Filter start-type: Demand Requested filter load order group: FSFilter Content Screener Requested altitude: 268400 Additional information: None Thanks, FilterDev
- All fields must be filled out.
- It may take Microsoft up to two weeks to process and assign altitudes. Any missing information may delay the assignment.
- The assigned altitude will eventually be reflected in the altitudes listed in File System Minifilter Allocated Altitudes. Please be aware that Microsoft only updates this list annually.