Error message when installing Windows software, untrusted certificate
installing a Windows application, the following message appears saying that
custom functions can not be used because of a certificate.
functions can not be used in this application because the certificate that
signed the deployment manifest for the add-in or its location is untrusted.
the administrator for further assistance
Error message during installation
Where is the certificate?
Windows projects (WPF, Addin, Winforms, VSTO Addin, COM) you will find the
certificate under Project-> Properties-> Signing.
solution is pretty simple. You do not really have to add a confidential
certificate to the project.
turn off the Signing-> Sign the ClickOnce manifest option-> OFF
Solution 2: Certificate via Windows Store
create a certificate through the Windows Store if you have a Microsoft
Developer account on Windows Store.
and settings of the created certificate via Store
distribution purposes, you can then export the certificate.
Copy to file->
Export: DER-encoded-binary x.509 or base-64 encoded