Do you see the “Sophos error code 1721” on your device screen while installing, upgrading, or uninstalling the Sophos Anti-Virus? Then make use of the instructions on this site to resolve the issue. Before getting into the solution for the problem, lets quickly understand the root cause of this issue. If the error code “Sophos error 1721” is displayed during the Sophos antivirus installation, the Sophos Endpoint Bootstrap log will display the information of the failed installation along with the error codes. Verify the installation logs in order to check which component has caused the error.
The below-mentioned error may occur from the Sophos Anti-Virus logs: “Product: Sophos Error 1721. The Windows Installer package has encountered with a problem. The program that is mainly responsible to complete this install is currently unable to run.”
To troubleshoot the above-mentioned error message, check whether there is any missing service or component that is required for the installation and continue with the instructions on this site on how to clear the issue.
If the SAVONACCESSDRIV.INF, SOPHOSBOOTDRIVER.INF and/or NATIVE.EXE file(s) are/is missing, then the automated uninstallation will also fail, as these files are required for the uninstall process. It might also generate the error 0X80041f08 during the uninstallation, upgrading, or migration failure. This can be seen in the Sophos MSI log and the Windows Application Event log.
If the install log suggests that few files related to Sophos have been deleted manually, then you have to add those files to the Sophos folder on your computer. Also, when you run the Process Monitor, you will see the following message: “msiexec.exe QueryOpen C:\Program Files\Sophos\Sophos Anti-Virus\Web Intelligence\swi_config.exe NAME NOT FOUND NT AUTHORITY\SYSTEM” Make use of these steps to resolve the Sophos error 1721 message:
Now, you could install, uninstall, or update the Sophos antivirus software on your computer without the error message “Sophos error code 1721.” If the error message “Sophos error 1721” still appears, click the Call button on this page to get in touch with our technical experts to fix the error.