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McAfee Enterprise and new OS installation

Hello everyone.

Last week, we installed a new version of Windows Server and the same previous version of ePO on that.

The IP and Server name is the same with the last installation.

Clients are able to telnet server:443 and server:8081

but, Agent Monitor shows: Agent failed to communicate with ePO Server

and, clients are not showing up in the console and are not receiving new DAT versions

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McAfee Employee
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Re: McAfee Enterprise and new OS installation

Hi There,

Thanks for posting you question in the community channel.

Well, the direct OS upgrade is not recommended if you have the ePO installed and running. We recommend you to follow the article which is mentioned to perform the OS upgrade.

The direct approach you can follow only for the ePO version upgrade, provided you must have the proper ePO file and folder backup, ePO snapshot along with SQL.

If you have already upgraded the OS , and communication seems broken with ePO and client machines. I suggest you to raise a Service request with our technical support team for further assistance.

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Re: McAfee Enterprise and new OS installation

Dear @Solidcore  ,

Thanks for replying.

We've already the new OS installation done! But before that, we took a whole backup of SQL database. Furthermore, another backups including: ......

As you mentioned, we have broken connection with server (Clients receive: Failed to communicate with ePO server) and nothing is shown in server console.

As I mentioned, we are running a WORKGROUP. 

Imagine we are going to add clients from the scratch. How can we deploy agent? When I try to deploy agent, the task fails ( Domain: . (dot) , username: localadmin , pass: localadmin's pass) 


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