Can't install, Certificate not trusted

I get this messange when I want to install the add-in.

De aangepaste functies van deze toepassing werken niet omdat het certificaat dat is gebruikt om het implementatiemanifest voor XLToolboxForExcel te ondertekenen, of de locatie hiervan, niet vertrouwd is. Neem contact op met de beheerder voor verdere ondersteuning.

************** Tekst van uitzondering **************
System.Security.SecurityException: De aangepaste functies van deze toepassing werken niet omdat het certificaat dat is gebruikt om het implementatiemanifest voor XLToolboxForExcel te ondertekenen, of de locatie hiervan, niet vertrouwd is. Neem contact op met de beheerder voor verdere ondersteuning.
bij Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInTrustEvaluator.VerifyTrustPromptKeyInternal(ClickOnceTrustPromptKeyValue promptKeyValue, DeploymentSignatureInformation signatureInformation, String productName, TrustStatus status)
bij Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInTrustEvaluator.VerifyTrustUsingPromptKey(Uri manifest, DeploymentSignatureInformation signatureInformation, String productName, TrustStatus status)
bij Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInTrustEvaluator.VerifyTrustUsingPromptKey(Uri manifest, DeploymentSignatureInformation signatureInformation, String productName)
bij Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.ProcessSHA1Manifest(ActivationContext context, DeploymentSignatureInformation signatureInformation, PermissionSet permissionsRequested, Uri manifest, ManifestSignatureInformationCollection signatures, AddInInstallationStatus installState)
bij Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.VerifySecurity(ActivationContext context, Uri manifest, AddInInstallationStatus installState)
bij Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.InstallAddIn()
De zone van de mislukte assembly is:
MyComputer

************** Geladen assembly’s **************
mscorlib
Assembly-versie: 4.0.0.0
Win32-versie: 4.8.4200.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/mscorlib.dll

Microsoft.VisualStudio.Tools.Office.Runtime
Assembly-versie: 10.0.0.0
Win32-versie: 10.0.60828.0
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Office.Runtime/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Office.Runtime.dll

System.Core
Assembly-versie: 4.0.0.0
Win32-versie: 4.8.4200.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll

System
Assembly-versie: 4.0.0.0
Win32-versie: 4.8.4200.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll

mscorlib.resources
Assembly-versie: 4.0.0.0
Win32-versie: 4.8.3752.0 built by: NET48REL1
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/mscorlib.resources/v4.0_4.0.0.0_nl_b77a5c561934e089/mscorlib.resources.dll

Microsoft.VisualStudio.Tools.Applications.Hosting
Assembly-versie: 10.0.0.0
Win32-versie: 10.0.60828.0
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.Hosting/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.Hosting.dll

Microsoft.VisualStudio.Tools.Applications.ServerDocument
Assembly-versie: 10.0.0.0
Win32-versie: 10.0.60828.0
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.ServerDocument/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.ServerDocument.dll

Microsoft.VisualStudio.Tools.Applications.Runtime
Assembly-versie: 10.0.0.0
Win32-versie: 10.0.60828.0
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.Runtime/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.Runtime.dll

System.Windows.Forms
Assembly-versie: 4.0.0.0
Win32-versie: 4.8.4200.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll

System.Drawing
Assembly-versie: 4.0.0.0
Win32-versie: 4.8.3752.0 built by: NET48REL1
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll

System.Configuration
Assembly-versie: 4.0.0.0
Win32-versie: 4.8.4190.0 built by: NET48REL1LAST_B
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll

System.Xml
Assembly-versie: 4.0.0.0
Win32-versie: 4.8.3752.0 built by: NET48REL1
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll

Microsoft.VisualStudio.Tools.Office.Runtime.resources
Assembly-versie: 10.0.0.0
Win32-versie: 10.0.60828.0
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Office.Runtime.resources/v4.0_10.0.0.0_nl_b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Office.Runtime.resources.dll

System.Xml.Linq
Assembly-versie: 4.0.0.0
Win32-versie: 4.8.3752.0 built by: NET48REL1
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml.Linq/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.Linq.dll

System.Deployment
Assembly-versie: 4.0.0.0
Win32-versie: 4.8.4200.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Deployment/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Deployment.dll

Microsoft.Office.Tools
Assembly-versie: 10.0.0.0
Win32-versie: 10.0.60828.0
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.Office.Tools/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.Office.Tools.dll

System.Security
Assembly-versie: 4.0.0.0
Win32-versie: 4.8.3752.0 built by: NET48REL1
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Security/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Security.dll

System.Deployment.resources
Assembly-versie: 4.0.0.0
Win32-versie: 4.8.3752.0 built by: NET48REL1
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/System.Deployment.resources/v4.0_4.0.0.0_nl_b03f5f7f11d50a3a/System.Deployment.resources.dll

Microsoft.VisualStudio.Tools.Applications.Hosting.resources
Assembly-versie: 10.0.0.0
Win32-versie: 10.0.60828.0
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.Hosting.resources/v4.0_10.0.0.0_nl_b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.Hosting.resources.dll

Microsoft.VisualStudio.Tools.Applications.ServerDocument.resources
Assembly-versie: 10.0.0.0
Win32-versie: 10.0.60828.0
CodeBase: file:///C:/windows/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.ServerDocument.resources/v4.0_10.0.0.0_nl_b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.ServerDocument.resources.dll

Fixed the problem by installing in Program Files and as Admin

Glad you got this working. There’s not so much I can do about the certificate situation, other than purchasing a $$$ certificate every year, which would force me to make the XL Toolbox a product you have to pay for…