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Thx aissim, I think stopping/restarting the Exchange systems as you described worked since it has now been 35 minutes without any Event ID: 9188 Errors on the server and we were seeing them every 15 minutes.<br />
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I did this while the staff was at &nbsp;lunch and all I noticed was the Outlook client lost connection with the Exchange server for a few minutes. &nbsp;Thanks Again.
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Thx aissim, I think stopping/restarting the Exchange systems as you described worked since it has now been 35 minutes without any Event ID: 9188 Errors on the server and we were seeing them every 15 minutes.

I did this while the staff was at  lunch and all I noticed was the Outlook client lost connection with the Exchange server for a few minutes.  Thanks Again.

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Good deal; glad it worked out. And yes, lunch is always a good time to kick the servers over!
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Good deal; glad it worked out. And yes, lunch is always a good time to kick the servers over!

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To try and resolve the recent appearance of Exchange Server 2003 Event ID: 9188 errors I want to stop and restart Exchange services without rebooting the server. &nbsp;What is the best way to do this? &nbsp;Do I stop ALL the Exchange services on the server or just the System Attendant service? &nbsp;[Or is this a bad idea and I should wait until after hours and reboot the whole server?]<br />
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Nothing has changed in our environment but curiously the Exchange server is now reporting every 15 minutes that it cannot read the membership of the Active Directory Users group &quot;Exchange Domain Servers&quot; &nbsp;(Error code: '80072020'), and YES, that group is in the users container and the server running Exchange is a member.
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To try and resolve the recent appearance of Exchange Server 2003 Event ID: 9188 errors I want to stop and restart Exchange services without rebooting the server.  What is the best way to do this?  Do I stop ALL the Exchange services on the server or just the System Attendant service?  [Or is this a bad idea and I should wait until after hours and reboot the whole server?]

Nothing has changed in our environment but curiously the Exchange server is now reporting every 15 minutes that it cannot read the membership of the Active Directory Users group "Exchange Domain Servers"  (Error code: '80072020'), and YES, that group is in the users container and the server running Exchange is a member.

How to properly reset Exchange 2003 services without rebooting server?

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

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.