This Error Event is part of Open Document Events.
Event ID · 69400
"Operation on file failed"
Overview
The Operation on file failed error message indicates that the Open Document Action has failed to request the associated application to perform the specified operation with the particular file.
Solution
Verify whether the file is accessible. Ensure that an application associated with the file type is installed and fully working. If a custom operation is requested instead of the default one, make sure that the application supports such operation with the particular file type.
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