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I installed a new ESXi 6.5 with Server 2016 machines.

After adding one more virtual harddisk to one of the servers I couldn't access it. It was shown in the explorer but was not accessible (access denied). I rebooted the windows server and after that the other local drives became also inaccessible (except the system drive).

Same on the next Windows server, after rebooting the local drives became also inaccessible (except the system drive).

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The server were running since two weeks without any problems.

What I checked:

  • No NTFS permission problem: Taking onwership and granting explicit rights didn't solve the problem (like: Domain Admins group denied access to d: drive)
  • checking eventlog
  • checking esx logs
  • checking windows updates: no new updates since 5 days (server were rebooted in this time)
  • No antivirus is installed
marsh-wiggle
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1 Answers1

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This is the solution: Data drive is inaccessible after Windows GPO update. The servers became also added to the domain. The revomable storage policy blocked the access.

Quote:

  • To resolve this issue, remove the affected Computer from Group Policy objects (GPO) set to restrict read and write access on removable devices.
  • To remove the affected Computer from Group Policy objects (GPO) set to restrict read and write access on removable devices, navigate to Administrative Templates > System > Removable Storage Access >All Removable Storage classes and deny all access
marsh-wiggle
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