Behavior:
When attempting to process documents using a Smart Index configuration, the process fails and you encounter the following error.
Binary document could not be opened.
Solution:
This error occurs when the Windows system temp folder (default location being C:\Windows\SystemTemp) on the machine accumulates more than 65,000 temporary files, reaching the Windows limit. This prevents the DocuWare OCR service from creating new temp folders needed to process documents. To resolve this error, clear the temporary files from C:\Windows\SystemTemp, then restart the DocuWare services. It is also recommended to set up a scheduled task to periodically clean this folder to prevent the error from reoccurring.
For instructions on how to restart DocuWare services, please refer to the following KBA: KBA-37226.
KBA applicable for both Cloud and On-premise Organizations.