KB Article | Forcepoint Support

Notes & Warnings

Note The same generic 1720 error message may occur as a result of several other configuration issues, such as a general SQL database access failure, insufficient SQL account role assignment, Transparent Data Encryption being enabled, etc.

Please ensure that a proper backup has been taken of the environment before performing a restoration. Refer to the following article for more information:
Confirming the Validity of Forcepoint DLP Backups

Problem Description

When performing a restoration of Forcepoint DLP, a 1720 error occurs:

error message during restoration of backup
Error 1720. There is a problem with this Windows Installer package. A script required for this install to complete could not be run. Contact your support personnel or package vendor.  Custom action DataRestore script error -2146828281, Microsoft VBScript runtime error: Out of memory: 'fso.FolderExists' Line 401, Column 3, 


The 1720 error is a generic error thrown when an installer script is not able to run, but the most common source of the issue is related to the SQL database.

DLP restorations operate under the assumption that the environment is near-identical to the environment from which the backup was taken on. That is, the following conditions must be met:
  • The backup and restoration environments must be on the same DLP version
  • The SQL database versions are the same
  • The same DLP installation drive and path must match
    • If the original environment had DLP installed on the D drive, then the environment where the backup is restored from must also have a D drive and have Forcepoint DLP installed on an identical path
    • The Forensics Repository path must match as well
  • The wbsn-data-security database must be installed on the same path
    • The path must match EXACTLY for the restoration to succeed
    • This can be confirmed by manually selecting (but not starting) the SQL backup from the SQL Management Studio and comparing the Original File Name with the Restore As value:
Right-click on the wbsn-data-security database and choose to restore the database:
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Select the wbsn-data-security.bak file from the DSSBackup as the source device:
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Confirm that the source and destination file paths match under Files:
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Cancel out of this procedure after the check has been completed.

If the restoration process fails, the wbsn-data-security database may be set to single user mode and additional restoration attempts will fail. Please revert the database back to multi-user mode before attempting a restoration again.

If the issue persists, please open a case with Technical Support and provide the following files:
  • %DSS_HOME%Logs\Modify-Data Security.Log or %TEMP%Modify-Data Security.Log
  • DataRestore.log from the backup folder being used


Keywords: DLP Data Security; Microsoft SQL Server; Restoration Failure; Backup Issue; Restore Not Completing; 1720 Error; MSI Error; Cannot Restore DLP; Single-User; Multi-User; DLP 1720 Restore;

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