16 August 2016

Oracle Virtual box extensions install fails with VERR_ACCESS_DENIED due to McAfee

Installing Virtual Box 5.1.2 extensions on windows 10 failed with this error:

VBoxExtPackHelperApp.exe: error: Failed to rename the temporary directory to the final one: VERR_ACCESS_DENIED ('D:\Program Files\Oracle\VirtualBox\ExtensionPacks\Oracle_VM_VirtualBox_Extension_Pack-_-inst-4288' -> 'D:\Program Files\Oracle\VirtualBox\ExtensionPacks\Oracle_VM_VirtualBox_Extension_Pack')
After seeing several people on the net pointing to the antivirus, I disabled the McAfee real time virus scanning that came for 1 year with my Dell PC:
  1. Right click System Tray McAffee LiveSafeIcon
  2. Change Settings > Real Time Scanning
  3. Turn off
    1. Leave In 15 minutes
Then I reran the extensions installer and all went well.

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