Event ID - 8250

Event Id8250
SourceMSExchangeAL
DescriptionThe Win32 API call <name> returned error code [0x<error code>] <error message>. The service could not be initialized. Make sure that the operating system was installed properly.
Event InformationAccording to Microsoft:
You can safely ignore the three events that appear together, as described in the "Symptoms" section of this article.

The events are logged when a call to DsGetDcName is made before the Microsoft Exchange Management Service is fully initialized. DsGetDcName is a Windows Application Programming Interface (API) function that returns the name of the domain controller.
Refer below given Microsoft article for more information about this event.

Following newsgroup information may help:

"Problem: Local users are unable to logon from win95/98 system.
Suggestion: At my work place, we had the same problem. If you run DHCP, I know that you can assign static IPs and that will solve the login issue. If youre not running DHCP right now, theres a patch for win9x machines that, Microsoft says, will fix it."
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"Check if you have enabled DHCP registration in DNS is set. For legacy clients this should enabled in DHCP server"
Reference LinksEvents 2104, 2102, and 8250 are logged after you apply Exchange 2000 Server Service Pack 2 or Service Pack 3

Problems logging on to a Windows 2000-based server or a Windows 2003-based server

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