What Can I Do if the Pattern File is Corrupt?

There may be occasion to revert, or rollback, IWSVA to a previous version the virus pattern file. The two most common reasons for a rollback are:

• false positive—a harmless file (or group of files) is incorrectly detected as unwanted

• corrupted files—transmission of the pattern introduced an error

Rollbacks are only supported for pattern files, Virus Scan Engine, Advanced Threat Scan Engine, and only if using registered versions of IWSVA.

To rollback to a previous version of one or more data files

1. From the main IWSVA menu, click Updates > Manual.

2. Select the component you want to rollback from the list that appears.

3. Click the Rollback button.

4. Click your browser's Refresh button to see the results of the rollback in the Current Version and Last Update columns.

• Note: To perform a rollback, IWSVA must have at least one previous version of the file on hand. You can set the number of pattern files to archive in Updates > Connection Settings, at the bottom of the page.

See also:

• Virus pattern file numbering

• Update the Pattern File Manually