Find solutions to known errors:TroubleshootingQuick repair toolTry this Repair Tool if any problems with XLTools installation.Downloads and installationThere is no XLTools tab in Excel, although the add-in is installed.Error: The customization cannot be installed because another version is currently installed.Warning: The signature is corrupt or invalid / Running this program might put your PC at risk.Error: The following Microsoft Office solution cannot be installed due to a general installation error: XLTools.vsto. Error code 0x0800700E, or 0x8007007E, or 0x080070002 (Visual Studio Tools for Office Solution Installer).Error: The value of the property ’type’ cannot be parsed. Could not load file or assembly or one of its dependencies.Error: Exception reading manifest: the manifest may not be valid or the file could not be opened (Microsoft Office Customization Installer).Error: System.Security.SecurityException: Customized functionality in this application will not work because the certificate used to sign the deployment manifest or its location is not trusted.Error: Specified argument was out of the range of valid values. Parameter name: entryValue (Microsoft Office Customization Installer).Error: System.Deployment.Application.DeploymentException: Unable to install this application because an application with the same identity is already installed. To install this application, either modify the manifest version for this application or uninstall the preexisting application.Error: System.Deployment.Application.DeploymentDownload.Exception: Downloading file:///C:/Users/Downloads/XLTools.vsto did not succeed.Licenses and purchasingI am having difficulty activating XLTools license.Features and ribbonXLTools dialogue boxes look distorted, cannot see the complete box.Any questions or suggestions?