Windows10をクリーンインストールしてもOculusソフトウェアがインストール失敗するようになってしまった。
誰かわかる?ログはこんな感じ。

★C:\Users\XXXX\AppData\Local\Oculus\OculusSetup.log
・・・(省略)・・・
[Debug] [2018/12/16 0:26:27] Setting installed release channel to 'LIVE'.
[Debug] [2018/12/16 0:26:27] Install 'Dawn.Setup.CreateRegistryKeysStep' succeeded.
[Debug] [2018/12/16 0:26:27] Install 'Dawn.Setup.SetEnvironmentVariablesStep' succeeded.
[Debug] [2018/12/16 0:26:27] Installing oculus-runtime.
[Error] [2018/12/16 0:26:29] Librarian exited code 18
[Debug] [2018/12/16 0:26:29] Install 'Dawn.Setup.InstallPackagesStep' failed.
[Warning] [2018/12/16 0:26:29] Rolling back installation.
[Debug] [2018/12/16 0:26:29] Uninstall 'Dawn.Setup.InstallPackagesStep' succeeded.
[Debug] [2018/12/16 0:26:29] Uninstall 'Dawn.Setup.SetEnvironmentVariablesStep' succeeded.
[Debug] [2018/12/16 0:26:29] Uninstall 'Dawn.Setup.CreateRegistryKeysStep' succeeded.
[Debug] [2018/12/16 0:26:29] Uninstall 'Dawn.Setup.ExtractLibrarianStep' succeeded.
[Debug] [2018/12/16 0:26:29] Partial uninstall: True
[Debug] [2018/12/16 0:26:29] Total files inside Oculus directory: 11 files
[Debug] [2018/12/16 0:26:29] Filtered files inside Oculus directory: 11 files
[Debug] [2018/12/16 0:26:29] Processing Restart Manager batch 0/1
[Debug] [2018/12/16 0:26:29] Initial RmGetResut: 0, number: 0, reason 0
・・・(省略)・・・


★C:\Users\XXXX\AppData\Local\Oculus\OVRLibrarian.log
[Debug] [2018/12/16 0:26:27] Starting up OVRLibrarian v1.16.0.0.
[Debug] [2018/12/16 0:26:28] Invoking service 'OVRLibraryService' with arguments [install-package, C:\OculusSetup-DownloadCache\oculus-runtime.zip, C:\OculusSetup-DownloadCache\oculus-runtime.zip.sig].
[Debug] [2018/12/16 0:26:29] Service 'OVRLibraryService' exited with code 1066+18.
[Debug] [2018/12/16 0:26:29] Exiting with code 18.