<div>
Kalti - I am on experts to try to trouble shoot myself. Calling Microsoft, buying a new server, replacing the IT department will for sure fix the problem. 
</div>


Kalti - I am on experts to try to trouble shoot myself. Calling Microsoft, buying a new server, replacing the IT department will for sure fix the problem.

<div>
<div class="content wysiwyg-content">
For some unknown reasons I am having unexpected restart of ALL DC. At first I thought it was a power failure - but its happening ONLY on the DC. In the error log the only major errors I see are:<br />
<br />
DC3 - <br />
DCOM was unable to communicate with the computer exchangeiii.domain.us using any of the configured protocols.DCOM was unable to communicate with the computer exchangeiii.resdevelopment<wbr />.us using any of the configured protocols.<br />
<br />
exchangeiii is the only exchange which I previously upgraded and had to do a clean up in order to remove. 
</div>
</div>


For some unknown reasons I am having unexpected restart of ALL DC. At first I thought it was a power failure - but its happening ONLY on the DC. In the error log the only major errors I see are:

DC3 - 
DCOM was unable to communicate with the computer exchangeiii.domain.us using any of the configured protocols.DCOM was unable to communicate with the computer exchangeiii.resdevelopment.us using any of the configured protocols.

exchangeiii is the only exchange which I previously upgraded and had to do a clean up in order to remove. 

Unexpected Restart of Domain Controllers

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

Windows Server 2003

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.