CB Defense: Sensor Upgrade Fails on Windows 10
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CB Defense: Sensor Upgrade Fails on Windows 10


Article ID: 288884


Updated On:


Carbon Black Cloud Endpoint Standard (formerly Cb Defense)


  • Upgrading Sensor from 2.x.x.x/3.1.x.x to 3.2.x.x and higher fails
  • The verbose MSI log may show an error with accessing the db_whi file
    Example 1:
    Error 1306. Another application has exclusive access to the file 'C:\Program Files\Confer\db_whi'. Please shut down all other applications, then click Retry.
    Example 2:
    Failed to generate hash for file 'C:\Program Files\Confer\db_whi'. Error: 0x20


  • CB Defense PSC Sensor: 3.1.x.x and lower
  • Windows 10 1709 (10.0.16299), Windows 10 1803 (10.0.17134)


Known issue with Sensor installers that existed previous to Sensor version 3.2.x.x


  1. Uninstall affected Sensor 
  2. Perform a new install of or higher Sensor

Additional Information

  • Many improvements were made to the installer beginning with the 3.2 version of the Sensor that address these upgrade issues (See 3.2 Release Notes)
  • In order to realize these improvements, the previous version will need to be uninstalled prior to installing version 3.2.x.x and higher
  • This issue was confirmed on Windows 10 1709 and Windows 10 1803
  • This issue may affect other versions of Windows that have not been confirmed