# File System Connector

The File System Connector extracts files from a file system.

To configure the File System Connector, you specify the folders that contain your files. You can also specify filters to retrieve or ignore specific files.

## Troubleshoot File System Connector

If the File System Connector does not return the data that you expect, check that:

- the connector has permission to read the files. By default, the connector runs as a system service. You might need to run the connector using a different user account. See Configure User Permissions.

- the connector is configured to retrieve the correct files. Check that the files are not being excluded by the configuration parameters that you have set, or by a regular expression.

- the files are not read-only. The File System Connector can retrieve files that are read-only. However, KeyView cannot process read-only `.nsf` and `.pst` files. To resolve this issue, you can:

- remove the read-only attribute from these files (the file contents are not modified).

- configure CFS to copy the files to a temporary directory (the temporary copies are not read-only). To do this, set the `WorkingDirectory` parameter in the File System Connector configuration file.

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