﻿id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host
16202,Unable to start guests on Windows 10 Insider build 14971,teh_klev,,"Windows 10 Pro (x64) Insider build 14971 arrived today and VirtualBox is know no longer to start any of my VM's

The following appears in a dialogue box:

Title: VirtualBox - Error In supR3HardNtChildPurify

Message: 

''supHardenedWinVerifyProcess failed with VERR_CR_X509_CPV_NOT_VALID_AT_TIME:  (rc=-23033)''
''Please try reinstalling VirtualBox.''

''where: supR3HardNtChildPurify''
''what:  5''
''VERR_CR_X509_CPV_NOT_VALID_AT_TIME (-23033) - Certificate path validator: The certificate is not valid at the specified time.''

I've tried reverting to VBox 5.1.6 & 5.1.7 and also installing the 5.1.9-111957 test build.

The VBoxHardening.log file reports some kind of certificate validation problem with ntdll.dll in \Windows\System32:

''118c.1b38: supHardenedWinVerifyProcess failed with Unknown Status -23033 (0xffffa607): Certificate is not valid (ValidTime=2088-08-14T12:05:18.000000000Z Validity=[2014-05-28T17:33:33.000000000Z...2029-05-28T17:43:33.000000000Z]): \Device\HarddiskVolume4\Windows\System32\ntdll.dll''

''118c.1b38: Error -23033 in supR3HardNtChildPurify! (enmWhat=5)''

''118c.1b38: supHardenedWinVerifyProcess failed with Unknown Status -23033 (0xffffa607): Certificate is not valid (ValidTime=2088-08-14T12:05:18.000000000Z Validity=[2014-05-28T17:33:33.000000000Z...2029-05-28T17:43:33.000000000Z]): \Device\HarddiskVolume4\Windows\System32\ntdll.dll''

",defect,closed,other,VirtualBox 5.1.8,fixed,,,all,Windows
