Solvedhomebrew cask VirtualBox Cask 6.0.8 Broken and Partial Fails Installation

General troubleshooting steps

Description of issue

Installing/removing VirtualBox 6.0.8 fails with cask but succeeds with installing the application from the downloaded *.pkg. I receive no notification about the System Extension. I've downloaded the *.dmg from the website and used the included Uninstall tool to remove all files to determine if this would resolve the problem and it hasn't. Perhaps, it is related to the reason that Travis was failing with this pull request but was pushed by someone anyways.

Command that failed

brew cask install virtualbox && brew cask uninstall virtualbox

Output of command with --force --verbose --debug

==> Cask::Installer#install
==> Printing caveats
==> Caveats
To install and/or use virtualbox you may need to enable its kernel extension in:
  System Preferences  Security & Privacy  General
For more information refer to vendor documentation or this Apple Technical Note:
  https://developer.apple.com/library/content/technotes/tn2459/_index.html

==> Cask::Installer#fetch
==> Satisfying dependencies
==> Downloading
==> Downloading https://download.virtualbox.org/virtualbox/6.0.8/VirtualBox-6.0.8-130520-OSX.dmg
/usr/bin/curl -q --show-error --user-agent Homebrew/2.1.2-51-g3dc3ab9\ \(Macintosh\;\ Intel\ Mac\ OS\ X\ 10.14.5\)\ curl/7.54.0 --location --silent --head --request GET https://download.virtualbox.org/virtualbox/6.0.8/VirtualBox-6.0.8-130520-OSX.dmg
Already downloaded: /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg
==> Checking quarantine support
/usr/bin/xattr
/usr/bin/swift /usr/local/Homebrew/Library/Homebrew/cask/utils/quarantine.swift
==> Quarantine is available.
==> Verifying Gatekeeper status of /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg
/usr/bin/xattr -p com.apple.quarantine /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg
==> /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg is quarantined
==> Downloaded to -> /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg
==> Verifying SHA-256 checksum for Cask 'virtualbox'.
==> Installing Cask virtualbox
==> Cask::Installer#stage
hdiutil imageinfo /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg
==> Extracting primary container
==> Using container class UnpackStrategy::Dmg for /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg
hdiutil attach -plist -nobrowse -readonly -noidme -mountrandom /var/folders/cc/3p7cvn414sg8lsr7ph5dkrtr0000gn/T/d20190515-46808-603wsh /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg
find . -print0
mkbom -s -i /var/folders/cc/3p7cvn414sg8lsr7ph5dkrtr0000gn/T/20190515-46808-55323q.list -- /var/folders/cc/3p7cvn414sg8lsr7ph5dkrtr0000gn/T/20190515-46808-13s5rwe.bom
ditto --bom /var/folders/cc/3p7cvn414sg8lsr7ph5dkrtr0000gn/T/20190515-46808-13s5rwe.bom -- /private/var/folders/cc/3p7cvn414sg8lsr7ph5dkrtr0000gn/T/d20190515-46808-603wsh/dmg.8FsAoJ /var/folders/cc/3p7cvn414sg8lsr7ph5dkrtr0000gn/T/d20190515-46808-1om6zi8
diskutil eject /private/var/folders/cc/3p7cvn414sg8lsr7ph5dkrtr0000gn/T/d20190515-46808-603wsh/dmg.8FsAoJ
cp -pR /var/folders/cc/3p7cvn414sg8lsr7ph5dkrtr0000gn/T/d20190515-46808-1om6zi8/VirtualBox.pkg /usr/local/Caskroom/virtualbox/6.0.8,130520/VirtualBox.pkg
cp -pR /var/folders/cc/3p7cvn414sg8lsr7ph5dkrtr0000gn/T/d20190515-46808-1om6zi8/VirtualBox_Uninstall.tool /usr/local/Caskroom/virtualbox/6.0.8,130520/VirtualBox_Uninstall.tool
cp -pR /var/folders/cc/3p7cvn414sg8lsr7ph5dkrtr0000gn/T/d20190515-46808-1om6zi8/UserManual.pdf /usr/local/Caskroom/virtualbox/6.0.8,130520/UserManual.pdf
chmod -Rf +w /var/folders/cc/3p7cvn414sg8lsr7ph5dkrtr0000gn/T/d20190515-46808-1om6zi8
==> Verifying Gatekeeper status of /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg
/usr/bin/xattr -p com.apple.quarantine /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg
==> /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg is quarantined
==> Propagating quarantine from /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg to /usr/local/Caskroom/virtualbox/6.0.8,130520
/usr/bin/xattr -p com.apple.quarantine /Users/robert/Library/Caches/Homebrew/downloads/130d78b88001e8d144b4c39fedf0caa739515abf930f870f90f440eaf644ea8c--VirtualBox-6.0.8-130520-OSX.dmg
/usr/bin/xargs -0 -- /bin/chmod -h u\+w
/usr/bin/xargs -0 -- /usr/bin/xattr -w -s com.apple.quarantine 0181\;5cdc420e\;Homebrew\\x20Cask\;0A5634BD-997B-4E85-BDA8-5B5877FD352C
==> Creating metadata directory /usr/local/Caskroom/virtualbox/.metadata/6.0.8,130520/20190515172003.492.
==> Creating metadata subdirectory /usr/local/Caskroom/virtualbox/.metadata/6.0.8,130520/20190515172003.492/Casks.
==> Installing artifacts
==> 3 artifact/s defined
#<SortedSet:0x00007fa8e1aeed18>
==> Installing artifact of class Cask::Artifact::Pkg
==> Running installer for virtualbox; your password may be necessary.
==> Package installers may write to any location; options such as --appdir are ignored.
/usr/bin/sudo -E -- env LOGNAME=robert USER=robert USERNAME=robert /usr/sbin/installer -pkg /usr/local/Caskroom/virtualbox/6.0.8,130520/VirtualBox.pkg -target / -verboseR
Password:
installer: Package name is Oracle VM VirtualBox
installer: Installing at base path /
installer:PHASE:Preparing for installation
installer:PHASE:Preparing the disk
installer:PHASE:Preparing Oracle VM VirtualBox
installer:PHASE:Waiting for other installations to complete
installer:PHASE:Configuring the installation
installer:STATUS:
installer:%12.990501
installer:PHASE:Writing files
installer:%48.839357
installer:PHASE:Writing files
installer:%86.793832
installer:PHASE:Running package scripts
installer:PHASE:Validating packages
installer:%97.750000
installer: The install failed (The Installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.)
==> Purging files for version 6.0.8,130520 of Cask virtualbox
Error: Failure while executing; `/usr/bin/sudo -E -- env LOGNAME=robert USER=robert USERNAME=robert /usr/sbin/installer -pkg /usr/local/Caskroom/virtualbox/6.0.8,130520/VirtualBox.pkg -target / -verboseR` exited with 1. Here's the output:
installer: Package name is Oracle VM VirtualBox
installer: Installing at base path /
installer:PHASE:Preparing for installation
installer:PHASE:Preparing the disk
installer:PHASE:Preparing Oracle VM VirtualBox
installer:PHASE:Waiting for other installations to complete
installer:PHASE:Configuring the installation
installer:STATUS:
installer:%12.990501
installer:PHASE:Writing files
installer:%48.839357
installer:PHASE:Writing files
installer:%86.793832
installer:PHASE:Running package scripts
installer:PHASE:Validating packages
installer:%97.750000
installer: The install failed (The Installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.)
Follow the instructions here:
  https://github.com/Homebrew/homebrew-cask#reporting-bugs
/usr/local/Homebrew/Library/Homebrew/system_command.rb:109:in `assert_success'
/usr/local/Homebrew/Library/Homebrew/system_command.rb:52:in `run!'
/usr/local/Homebrew/Library/Homebrew/system_command.rb:29:in `run'
/usr/local/Homebrew/Library/Homebrew/system_command.rb:33:in `run!'
/usr/local/Homebrew/Library/Homebrew/cask/artifact/pkg.rb:59:in `block in run_installer'
/usr/local/Homebrew/Library/Homebrew/cask/artifact/pkg.rb:65:in `with_choices_file'
/usr/local/Homebrew/Library/Homebrew/cask/artifact/pkg.rb:52:in `run_installer'
/usr/local/Homebrew/Library/Homebrew/cask/artifact/pkg.rb:34:in `install_phase'
/usr/local/Homebrew/Library/Homebrew/cask/installer.rb:214:in `block in install_artifacts'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/set.rb:674:in `each'
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/set.rb:674:in `each'
/usr/local/Homebrew/Library/Homebrew/cask/installer.rb:205:in `install_artifacts'
/usr/local/Homebrew/Library/Homebrew/cask/installer.rb:103:in `install'
/usr/local/Homebrew/Library/Homebrew/cask/cmd/install.rb:23:in `block in run'
/usr/local/Homebrew/Library/Homebrew/cask/cmd/install.rb:16:in `each'
/usr/local/Homebrew/Library/Homebrew/cask/cmd/install.rb:16:in `run'
/usr/local/Homebrew/Library/Homebrew/cask/cmd/abstract_command.rb:36:in `run'
/usr/local/Homebrew/Library/Homebrew/cask/cmd.rb:92:in `run_command'
/usr/local/Homebrew/Library/Homebrew/cask/cmd.rb:158:in `run'
/usr/local/Homebrew/Library/Homebrew/cask/cmd.rb:123:in `run'
/usr/local/Homebrew/Library/Homebrew/cmd/cask.rb:9:in `cask'
/usr/local/Homebrew/Library/Homebrew/brew.rb:102:in `<main>'
Error: Kernel.exit
/usr/local/Homebrew/Library/Homebrew/cask/cmd.rb:167:in `exit'
/usr/local/Homebrew/Library/Homebrew/cask/cmd.rb:167:in `rescue in run'
/usr/local/Homebrew/Library/Homebrew/cask/cmd.rb:146:in `run'
/usr/local/Homebrew/Library/Homebrew/cask/cmd.rb:123:in `run'
/usr/local/Homebrew/Library/Homebrew/cmd/cask.rb:9:in `cask'
/usr/local/Homebrew/Library/Homebrew/brew.rb:102:in `<main>'

Output of brew cask doctor

==> Homebrew Version
2.1.2-51-g3dc3ab9
==> macOS
10.14.5
==> SIP
Enabled
==> Java
1.8.0_212-zulu-8.38.0.13
==> Gatekeeper support
Enabled
==> Homebrew Cask Install Location
<NONE>
==> Homebrew Cask Staging Location
/usr/local/Caskroom
==> Homebrew Cask Taps:
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask (4017 casks)
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask-versions (198 casks)
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask-fonts (986 casks)
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask-drivers (164 casks)
==> Contents of $LOAD_PATH
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/simplecov-cobertura-1.3.1/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/ruby-macho-2.2.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rubocop-rspec-1.33.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rubocop-performance-1.2.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rubocop-0.69.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/unicode-display_width-1.6.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/ruby-progressbar-1.10.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rspec-wait-0.0.9/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rspec-retry-0.6.1/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rspec-its-1.3.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rspec-3.8.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rspec-mocks-3.8.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rspec-expectations-3.8.3/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rspec-core-3.8.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rspec-support-3.8.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/ronn-0.7.3/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rdiscount-2.2.0.1/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/extensions/universal-darwin-18/2.3.0/rdiscount-2.2.0.1
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/rainbow-3.0.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/plist-3.5.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/parser-2.6.3.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/parallel_tests-2.29.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/parallel-1.17.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/mustache-1.1.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/mechanize-2.7.6/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/webrobots-0.1.2/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/ntlm-http-0.1.1/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/nokogiri-1.10.3/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/extensions/universal-darwin-18/2.3.0/nokogiri-1.10.3
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/mini_portile2-2.4.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/net-http-persistent-3.0.1/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/net-http-digest_auth-1.4.1/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/mime-types-3.2.2/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/mime-types-data-3.2019.0331/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/jaro_winkler-1.5.2/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/extensions/universal-darwin-18/2.3.0/jaro_winkler-1.5.2
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/http-cookie-1.0.3/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/hpricot-0.8.6/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/extensions/universal-darwin-18/2.3.0/hpricot-0.8.6
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/domain_name-0.5.20180417/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/unf-0.1.4/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/unf_ext-0.0.7.6/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/extensions/universal-darwin-18/2.3.0/unf_ext-0.0.7.6
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/diff-lcs-1.3/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/coveralls-0.8.23/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/thor-0.20.3/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/term-ansicolor-1.7.1/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/tins-1.20.2/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/simplecov-0.16.1/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/simplecov-html-0.10.2/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/docile-1.3.1/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/json-2.2.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/extensions/universal-darwin-18/2.3.0/json-2.2.0
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/connection_pool-2.2.2/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/backports-3.14.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/ast-2.4.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/activesupport-5.2.3/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/tzinfo-1.2.5/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/thread_safe-0.3.6/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/minitest-5.11.3/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/i18n-1.6.0/lib
/usr/local/Homebrew/Library/Homebrew/vendor/bundle/bundler/../ruby/2.3.0/gems/concurrent-ruby-1.1.5/lib
/Library/Ruby/Site/2.3.0
/Library/Ruby/Site/2.3.0/x86_64-darwin18
/Library/Ruby/Site/2.3.0/universal-darwin18
/Library/Ruby/Site
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/vendor_ruby/2.3.0
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/vendor_ruby/2.3.0/x86_64-darwin18
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/vendor_ruby/2.3.0/universal-darwin18
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/vendor_ruby
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/x86_64-darwin18
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/universal-darwin18
/usr/local/Homebrew/Library/Homebrew
==> Environment Variables
LC_ALL="en_US.UTF-8"
PATH="/usr/local/Homebrew/Library/Homebrew/shims/scm:/usr/bin:/bin:/usr/sbin:/sbin"
SHELL="/bin/bash"

Output of brew tap

homebrew/bundle
homebrew/cask
homebrew/cask-drivers
homebrew/cask-fonts
homebrew/cask-versions
homebrew/core
homebrew/portable-ruby
homebrew/services
koekeishiya/formulae
vitorgalvao/tiny-scripts
17 Answers

✔️Accepted Answer

BTW. For those having this problem and need an immediate resolution. Boot into Recovery with Command-R and open terminal. This will add the extension to the SIP check.

spctl kext-consent add VB5E2TV963

Other Answers:

BTW. For those having this problem and need an immediate resolution. Boot into Recovery with Command-R and open terminal. This will add the extension to the SIP check.

spctl kext-consent add VB5E2TV963

Thanks, Robert.

I was having problems trying to uninstall this broken install, with no success. I was able to force a reinstall of the older version (6.0.6), with:

brew cask reinstall -f https://raw.githubusercontent.com/homebrew/homebrew-cask/28143da5bb1559f734221b6ad6e3cb5b7ab0153f/Casks/virtualbox.rb

The latest comment suggests that 6.0.8 will be notarized and an updated installer may be released. Still, the update should be reverted.

6.0.8 has been notarized and the installer works now. At least when an internet connection is present. I haven't tried it offline.

Here's the VirtualBox_Uninstall.tool that's included in the *.dmg for version 6.0.8. It's unaltered and a bash script. Just unzip and open the tool in terminal. Open the file in a text editor to view the contents.
VirtualBox_Uninstall.zip

More Issues: