Host Windows server 2003, exchange server 2003 & amp; DC together, made some security patches, restart, the results do not come, the exchange information store, owa, uninstall the patch, made after recovery, can exchange information store, AD topology and attendant can also, other services for, 1053, an error log in at ASP.net, please explain what reason is caused? How to solve? To update ASP.net useful? The DC can have what effect? Thank you very much!