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Exchange 2016 – Event Errors 7024, 1026, 9542, and 5000

One of the event errors that may appear in the exchange server’s event viewer are event errors 7024, 1026, 9542, and 5000 as following:


Event Type:Error

Event Source:Service Control Manager

Event Category:None

Event ID:7024

Description:

The Microsoft Exchange Information Store service terminated with service specific error 0.



Event Type:Error

Event Source:POP3SVC

Event Category:General

Event ID:1026

Description:

Initialization of the POP3 external interface failed with error 0x0.

Data: 0000: ec 00 11 00



Event Type:Error

Event Source:MSExchangeIS

Event Category:General

Event ID:9542

Description:

Initialization of external interface NNTP failed; Error ecNotInitialized-MAPI_E_NOT_INITIALIZED.



Event Type:Error

Event Source:MSExchangeIS

Event Category:General

Event ID:5000

Description:

Unable to initialize the Microsoft Exchange Information Store service. Error 0x80040605.


That will happen when you start Windows with Exchange installed, and the exchange services not start that is because Exchange Microsoft Exchange Information Store will not start then all services that depend on Information Store service will not be able to start.

The cause of this that the Services string type value located in the following registry key is missing or inaccessible “HKEY_LOCAL_MACHINE\Software\Microsoft\Exchange\Setup”

So you should first check if the required registry key is exist or not as following:


Value name: Services

Value type: String

Value: Path to Exchange installation root


If the registry key exists with the correct value so you should check the permission of the exchange service account on the registry key located on path “HKEY_LOCAL_MACHINE\Software\Microsoft\Exchange\Setup”

Ratish Nair

Microsoft MVP | Office Servers and Services

Team @MSExchangeGuru


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