A form template (.xsn) file cannot be accessed. You may not have the required permissions to open the file.

Sharepoint Guidance

OH NO! Error opening a task! I can’t approve the Workflow Task!


Recently received this error when creating a new task via SharePoint Designer Workflow. This issue occurred for regular users but not for Site Collection Administrators. This was baffling as the task had no custom permissions and all users had contributeto the task list. First step I took was to look up the ULS log entry for the correlation id. Here is the result: The XSN isnulland its not a cross server issue.Most likely a permission issue.

Steps I took in trying to resolve:

1. Delete the Approval .xsn via SharePoint Designer and republish the workflow. This populates the native Approval xsn again and sometimes can resolve issues such as this.

2. Republish the form and recreate the workflow completely with a  new tasks list. This did not work. Error occurred again.

3. Check the workflow…

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