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Home » Kerio User Forums » Kerio Connect » KOC Offline Ed error 0x80040154 Class not Reg (Error whike creating new mail profile)

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While I tryin create new mail profile in Control Panel -> Mail -> add configuration, I set valid mailserver name and valid credentials, But test connection result error: failed checking connection to Kerio Mailserver, 0x80040154 Class not Registered.

All search results about same problem (not related Kerio, but 0x80040154 Class not Reg) in Google give no effect - installing VB6SP6, register dll, etc.

But KOC (not Offline Edition) working properly without getting errors. Version of server, ADE, KOC, console - 6.5.0-5116-win32, fresh downloaded from
Lukas Petrlik (Kerio)

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Try to reinstall KOFF.

If it does not help, please contact our technical support at . They will need your debug.log which is usually in "C:\Documents and Settings\<username>\Local Settings\Application Data\Kerio\Outlook Connector\".

Lukas Petrlik
Kerio Technologies
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