Hello everyone, I'm facing some strange scenario when installing exchange 2007 sp2 with coexistence of 2003 on my lab. Here my setup: DC : Win server 2003 std edition 32 bit ADC : Win server 2008 ent edition 32 bit Exch : exchange 2003 std edition already exist Now I'm installing exchange 2007/sp2 on windows server 2008 ent/std 32 bit edition. But its throwing below error: I cannot install this KB either since it is 64 bit. Could not find any other workaround for this. Question: If the exchange server consider the win OS as 64 bit means why is that throwing error for only MBX role? Thanks a ton in advance. Thanks & Regards, Kottees R

why not install a 64-bit?Where Technology Meets Talent

Hi, You meant why not not installed 64 bit KB? However I've installed 64bit OS. Thanks & Regards, Kottees R

If you have OS 64-bit then also install the 64-bit Exchange.Where Technology Meets Talent

Yeah i hav installed already. Its looks good now. Thanks for the concern....Thanks & Regards, Kottees R

you mean your exchange installation is done finally?Where Technology Meets Talent

Yes i installed Exchange 64bit finally.Thanks & Regards, Kottees R