Sorry my E. is not good.

 This is my case.

 I have 3 sites at 3 places. Each site has 2 domain controllers.

 First, I installed AD RMS on Site A (Main Site). Everything is okie. All client (include Windows 7, windows XP ...) cant connect to AD RMS server to use it.

 But on Site B and C, only clients are using Windows 7 or Server can connect AD RMS. Windows XP is not. I installed RMS Client SP2 on all Windows XP, but they can't access website of RMS server by IE. But when I use another browser (Firefox, Chrome), they access fine.

 And if IE can't acceess, so the client can't use AD RMS.

 Somebody get the same error and has solution to fix it ???

 Thanks !!!