BitLocker Network Unlock is not working

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hello!

we have been trying network unlock working bitlocker. working before doesn't anymore since tried deploy on our actual wds server instead of test server. moving on certificates didn't seem work, , creating new ones same .inf file don't work either. keep getting pin prompt on client machine.

here symptoms:

  • on client machine, event log says "bootmgr failed obtain bitlocker volume master key network key protector".
  • on wds server, "[wdsserver/wdspxe/nkpprov] not find configuration file section corresponding specified certificate thumbprint. no subnet restrictions apply certificate. certificate thumbprint = <our certificate>, hresult = 0x80070002.
  • also, "[wdsserver/wdspxe/nkpprov] not find configuration thumbprint. certificate thumbprint = <our certificate>".

troubleshooting:

  • we have confirmed certificate has been deployed via group policy , shows protector in manage-bde.
  • group policy settings network unlock enabled , linked correct ou.
  • the wds server role running.
  • the dhcp server separate wds server.
  • the client's bios configured uefi boot csm disabled , network stack enabled.
  • here's .inf file used generate self-signed cert looks like:
[newrequest]  subject="cn=bitlocker network unlock certificate" exportable=true requesttype=cert keyusage="cert_key_encipherment_key_usage" keylength=2048 keyusage=0x30 keyspec=1 validityperiod=years validityperiodunits=10  [extensions] bitlocker drive encyption = "{text}" _continue_ = "oid=1.3.6.1.4.1.311.67.1.1"  bitlocker drive encryption = "{text}" _continue_ = "1.3.6.1.4.1.311.67.1.1"
thoughts on might missing? need more info?

hello all! network unlock works now. discovered needed reboot server after installing certificate. in microsoft's instructions mention requirement.


Windows Server  >  Security



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