Resolve broken or duplicate asset folder thumbnails in Adobe Experience Manager Template Assistant
Adobe Experience Manager (AEM) Template Assistant may display broken or duplicate folder thumbnails in the asset selector when folder thumbnails aren’t generated correctly or duplicate folder references exist in the Digital Asset Management (DAM) structure. Reprocessing the Design Assets folder may not regenerate the thumbnails, requiring manual thumbnail assignment. To resolve the issue, review the DAM structure for duplicate folders, update affected folder thumbnails manually, and verify that they display correctly in Template Assistant.
Description description
Environment
Adobe Experience Manager (AEM) Template Assistant, all supported versions and deployment models
Issue/Symptoms
- Asset folder thumbnails appear as broken images or are duplicated in the Template Assistant asset selector UI.
- The issue persists after reprocessing the Design Assets folder.
- No specific error messages appear, but thumbnails are missing or incorrect.
- Duplicate folder references in the Digital Asset Management (DAM) structure can result in duplicate thumbnail entries.
Root cause
AEM doesn’t always automatically generate folder thumbnails for asset folders, especially when duplicate folder references exist or reprocessing doesn’t trigger thumbnail regeneration. Manual assignment is required to ensure that thumbnails display correctly in Template Assistant.
Resolution resolution
Follow the steps below to resolve the issue:
-
In AEM Author, go to Assets
>Files. -
Locate the folders with broken or duplicate thumbnails.
-
Review the DAM structure for folders with similar or identical names in different locations. If you find duplicate folders and confirm that they’re unused, remove or consolidate them as appropriate.
-
Manually update the affected folder thumbnail:
- Select the affected folder.
- Select Properties.
- In Folder Properties, change the thumbnail by selecting a file from your computer.
- Select Save & Close.
-
Return to Template Assistant and verify that the folder thumbnails display correctly in the asset selector.
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If automatically rendered thumbnails aren’t restored and you want to avoid manual thumbnail assignment, consider submitting an enhancement request for improved thumbnail auto-generation.