App-V Support Tip: Publishing Server URL is unreachable after upgrade to 5.1
After upgrading App-V 5.0 Management and Publishing servers to App-V 5.1, you may encounter a problem where publishing no longer function properly and the following issues appear: - Accessing the Publishing URL in Internet Explorer from directly on the Publishing Server (e.g.http://localhost:82, where 82 is the port assigned to the Publishing Server Service) generates the following error message: The website cannot display the page - The event below is seen in Event Viewer\Applications and Servers logs\App-V\Server-Publishing-Private\Debug: Failed to pre-load publishing metadata. Message: Object reference not set to an instance of an object. Details: Stack Trace: at Microsoft.AppV.Server.Publishing.PublishingMetadataSerializer.PackageSerializer.Load(XElement pkgElement, PublishingMetadata& data) at Microsoft.AppV.Server.Publishing.PublishingMetadataSerializer.RootSerializer.Load(XmlReader reader) at Microsof...