• Custom Amazon S3 Storage - "The process cannot access the file"
    Question Oct 1, 2024
    We have configured a custom storage module according to the follwoing documentation: https://docs.kentico.com/13/custom-development/working-with-physical-files-using-the-api/configuring-file-system-providers/configuring-amazon-s3 Occasionally, we have an issue that results i...

  • Failed local installation of K13 Xperience
    Question May 14, 2024
    Context: * I have given my user as well as the admin and trustedinstaller user all full access to the 'inetpub/wwwroot' folder. * I have tried the download as admin and deleted old download attempts from the above mentioned folder. * upon install no modules were unselected (i...

  • Media Files Selector not loading in page builder
    Question Feb 20, 2024
    I have a simple property on my widget: public const string MediaLibraryName = "Images"; [EditingComponent(MediaFilesSelector.IDENTIFIER, Label = "Background image", Order = 1)] [EditingComponentProperty(nameof(MediaFilesSelectorProperties.MaxFilesLimi...

  • Class information for class 'CMS.CategoryClass' not found
    Question Apr 16, 2025
    Hello everyone, I'm currently working in Kentico 13 and facing an issue when creating a new site. I receive the following warning when trying to edit or delete a custom table or page type: [FieldEditor.SaveSelectedField()]: [DataClassInfoProvider.GetClassStructureInfoFro...

  • Web Farm Sync issue
    Question Feb 4, 2025
    I have the Kentico 13 application below is the URL format of the application. I recently updated the version to the latest 13.0.173 after that my media files sync is not working when i am uploading a new media file. I have set the Web farm to Automatic and previously it was wo...

  • What globel event is triggered on saving the 'Form' tab of a custom page type?
    Question Oct 16, 2024
    The ask: we have a custom page type with a checkbox we'd like to synchronize across the different language versions of a page. e.g. Admin user goes to page type in admin tree view, checks the box on the English page, we'd like to synchronize that selection across the other la...

  • Kentico 13: Preview url got 404 after migrated asp.net mvc site from 4.8 to .net 8
    Question Mar 19, 2024
    The preview link works when we use .net 4.8. After we migrate to .net 8 recently, we got 404 error . Here are key points we have 1. We are using Kentico 13 2. Got 404 when we try to access a url like: https://localhost:7044/cmsctx/pv/f211f3e1-5949-44c1-9842-c6526c92409f/cultur...

  • Cannot read properties of undefined (reading 'mediaFilesSelector')
    Question Sep 26, 2023
    Hi, I upgraded to the latest hotfix (v13.0.124) and I've been getting the error Cannot read properties of undefined (reading 'mediaFilesSelector') when trying to edit a widget. Digging into the debugger the function called is as follows: (function () { const file...

  • Upfort CVE-2021-4231 Angular Security Flaw
    Question Jun 6, 2025
    I was recently made aware of an Upfront scan that flagged Angular as a security issue. This is on a 13.0.128 website. The only references I can find to Angular are for the admin's use of AngularJS. Would this end up bundled into any script/etc that would be included on the ...

  • Disabling virtual objects in Admin portal - Access to path is denied
    Question Mar 19, 2025
    Hello, Using K13, I am going to apply a new hotfix (from 114 to 178) and by following the instructions, I tried to disable the virtual objects of the file system in the administration portal. However, I got the following error `"Operation did not success: Access to the path "...

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