• InvalidOperationException: Collection was modified
    Description This article describes an intermittent exception on startup caused by async registration of localization providers for modules because XForms translates text too early.  The error in stack trace is seen below. [InvalidOperationException: Collection was modified; enumeration oper...

  • Errors on migration page on upgrade (Migration failed)
    Description If you get the error message: 1. Migrates published Catalog Content has failed with exception 'System.Data.SqlClient.SqlException (0x80131904): Execution Timeout Expired. or 2. Failed to clean up meta keys: Execution Timeout Expired. The timeout period elapsed prior to completio...

  • WebSocket Protocol Issue When Upgrading
    When upgrading your Episerver CMS UI to the latest versions, you may run into a websocket protocol error. This article provides links on this change and how to resolve the issue.  can't establish a connection to the server at wss://yoursite.com/EPiServer/Shell/socket/endpoint/.socket = ...

  • Installing Commonly Used IIS Features Using Powershell
    This article provides a set of powershell commands which will install commonly used IIS features. Resolution Run powershell as an administrator and run the following commands to install a set of commonly used IIS features. Import-Module servermanager Install-WindowsFeature Web-A...

  • How to Setup an Older (Prior to Version 9) Episerver Site Without Deployment Center
    Description The Visual Studio extension makes it easy to create new Episerver solutions and projects from scratch. However, if you were to have the latest version of the extension, it would by default setup a version of Episerver that is more recent. For example, version 10.0.1.202 released o...

  • How To Find the Episerver CMS Version
    DescriptionThis article illustrates the different methods to locate Episerver CMS Platform version information. ResolutionThe image below shows the following options to find the version number.In Admin mode, click the Config tab > Plug-in Manager.View the title of the editor/admin mode b...