For some reason this won't post unless I add tags, and the tags that come up aren't really related - so apologies for posing in the wrong area!
I have a number of VSTO add-ins that will no longer load after a recent update due to a ClickOnceAddInTrustEvaluator error. This is new as of the recent update which installed this morning.
I don't have a proper security certificate and don't have any desire to purchase one as the add-ins are only used by me, but it won't even run off a Test Certificate in debug mode.
Error message as follows:
System.Security.SecurityException: Customized functionality in this application will not work because the certificate used to sign the deployment manifest for <snip> or its location is not trusted. Contact your administrator for further assistance.
at Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInTrustEvaluator.VerifyTrustPromptKeyInternal(ClickOnceTrustPromptKeyValue promptKeyValue, DeploymentSignatureInformation signatureInformation, String productName, TrustStatus status)
at Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInTrustEvaluator.VerifyTrustUsingPromptKey(Uri manifest, DeploymentSignatureInformation signatureInformation, String productName, TrustStatus status)
at Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.ProcessSHA2Manifest(ActivationContext context, DeploymentSignatureInformation signatureInformation, PermissionSet permissionsRequested, Uri manifest, ManifestSignatureInformationCollection signatures, AddInInstallationStatus installState, TrustStatus sha256TrustStatus, X509Certificate2 sha256PublisherCert)
at Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.VerifySecurity(ActivationContext context, Uri manifest, AddInInstallationStatus installState)
The Zone of the assembly that failed was: