Dear All ,

I have windows 2012 STD with ADS, DNS also another server Windows server 2012 R2 with  Exchange server 2013 SP1 it's working fine and i have create mail box all those features there is no problem . My exchange server 2013 it's was working one day perfectly the next day  I have a problem with AD some i got it Event view message  here ...

Event ID : 10015

Active Manager Client already doing query for object 'Main-Exchange' on another thread, however this thread didn't complete

in 100 msec. 

Event ID : 10006 Active Manager Client experienced an AD timeout trying to lookup object 'MAIN-EXCHANGE' in 00:01:00.

Then i  have been restart my Domain and  Exchange  is't working fine .... Please how can we solve this issue .. any new update ???

Please i am waiting for your valuable feed back...

The first thing I would do is install the latest CU.  Technically only the 2 latest CU's are officially support by Microsoft.  The next thing, are there any firewalls between Exchange and your DC's (including Windows Firewall).

Dear Boss,

Thanks for your information ...I think my one of the engineer did mistake of Windows OS Image based he applied  My domain and Exchange server same image so i think problem i will chk and replay to u ...

Thanks