This article describes the possible causes of this error and provides resolutions for each.  

Cause: Antivirus

• An antivirus or endpoint security tool is blocking FlexiCapture components, which affects the processing of documents.

Resolution

• Add FlexiCapture to the antivirus whitelist/list of exclusions

Cause: Access is restricted

• Some of the accounts used by the FlexiCapture cannot access the mentioned files.

Resolution

• Ensure required accounts have full access to FlexiCapture's File Storage

Cause: File is already in use

• Two processes accessed the same file at the same time.
  • This can happen due to a heavy workload (for example, the FlexiCapture component was not able to free the file in time).

Resolution

• If this is the case, and the above error does not affect the processing, then the error does not require any specific actions for elimination.