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The NPM Desktop Notification Tool is unable to connect to the server and the following error appears:
The exception has been thrown by the target of an invocation.
When this problem occurs, the Orion Server - Windows System event log displays an error message pertaining to the untrusted certificate. A log example is provided below:
Schannel,(0),DOIT-PVOSW01.NMADS.lcl,"The certificate received from the remote server was issued by an untrusted certificate authority. Because of this, none of the data contained in the certificate can be validated. The SSL connection request has failed. The attached data contains the server certificate.
3/30/2015 3:55:16 PM",Schannel,(0),DOIT-PVOSW01.NMADS.lcl,"A fatal alert was generated and sent to the remote endpoint. This may result in termination of the connection. The TLS protocol defined fatal error code is 48. The Windows SChannel error state is 552.
The DNT fails with:
The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. ---> The remote certificate is invalid according to the validation procedure.
NPM version 11.5 and later
This issue occurs when you use a self-signed certificate on the Orion website that DNT does not trust.