WebService Error: The target principal name is incorrect

tfranzen · 2016-10-12

Hi all,

I've managed to consume a NAV-WebService from NAV when the WebService is running on the same machine as the consumer (means 2 different Services for 2 different databases on my local notebook). Now I try to consume a WebService which is provides from a different machine (but in same domain) and I'm receiving an error "Der Zielprinzipalname ist falsch" (The target principal name is incorrect)
Does anyone have an idea how to solve this?

Thanks
Thomas

tfranzen · 2016-10-14

Hi all,

the solution for my problem was the following:
- Enable "Use NLTM Authentication" in ServerConfiguration (solved the problem with the target principal Name)
- Be aware of NAV using the ServiceUser when using DotNet-Variables with property "RunOnClient" set to No

Greetings
Thomas

ishwarsharma016 · 2016-10-12

Please check this link https://blogs.msdn.microsoft.com/meer_alam/2015/05/10/the-target-principal-name-is-incorrect-cannot-generate-sspi-context/

It has details about this particular issue. Maybe it will help you resolve your issue.

frisch · 2016-10-13

SPNs - it was French to me two years ago and although I know what to do to create them, i still don't fully understand how they work.

Anyone here who has a link to and/or can write a really simple explanation on what they do and why?

tfranzen · 2016-10-14

Hi all,

the solution for my problem was the following:
- Enable "Use NLTM Authentication" in ServerConfiguration (solved the problem with the target principal Name)
- Be aware of NAV using the ServiceUser when using DotNet-Variables with property "RunOnClient" set to No

Greetings
Thomas

WebService Error: The target principal name is incorrect

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