ProTip for ePO: McAfee Agent installation or upgrade fails when the system variable for the Temp directory is incorrect

Version 1

    n some cases, an installation or upgrade for McAfee Agent fails with one of the following errors:

    • The process cannot access the file because another process has locked a portion of the file
    • fatal error during installation

      This issue can occur when the system variable for the Temp directory points to a non-existent path. To resolve the issue, change the Temp system variable to point to a valid location. For full information, see KB86588.