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Set Up and Maintain Your Salesforce Organization
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          View Errors in Error Windows

          View Errors in Error Windows

          Before Spring ’26, and by default, Lightning Experience shows runtime errors in an error window.

          These error windows interrupt whatever you are doing.

          Example
          Example
          Modal error window

          Generally speaking, there’s not much you can do about these errors other than click OK and reload the page. If the error repeats, contact your Salesforce admin.

          You can help to avoid the error repeating by doing one or both of these steps.

          • If you can describe the steps that immediately preceded seeing the error, providing that information in the text box can help Salesforce or your admin to find and fix the problem.
          • Sometimes there’s useful information in the Technical Stuff section, which is collapsed by default. If you’re using a custom app developed by your organization, expanding this section and copying the information to share with your development team can be extremely helpful.
           
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          Salesforce Help | Article