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
