3.3.5.2.3 Processing of the DrawNineGrid Cache Error PDU
The structure and fields of the DrawNineGrid Cache Error PDU are specified in section 2.2.2.3.3, and the techniques described in [MS-RDPBCGR] section 3.3.5.2 demonstrate how to process the contents of the PDU.
Once this PDU has been processed, the server MUST disable NineGrid bitmap caching for the duration of the connection and resend the graphics data associated with the affected area.
Once NineGrid bitmap caching has been disabled, the server MUST NOT send the Create NineGrid Bitmap (section 2.2.2.2.1.3.4) Alternate Secondary Drawing Order, and the Stream Bitmap First (section 2.2.2.2.1.3.5.1) and Stream Bitmap Next (section 2.2.2.2.1.3.5.2) Alternate Secondary Drawing Orders for the duration of the connection.