AD Connect installed on Server 2012R2. Inplace upgrade to Server 2019 – 835BEE60-8731-4159-8BF F-941301D76D05

January 12, 2022
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Get-ADSyncConnector
Get-ADSyncConnector : Retrieving the COM class factory for remote component with CLSID
{835BEE60-8731-4159-8BFF-941301D76D05} from machine XXXXX failed due to the following error: 80040154 XXXXX
At line:1 char:1
+ Get-ADSyncConnector
+ ~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ReadError: (Microsoft.Ident…ConnectorCmdlet:GetADSyncConnectorCmdlet) [Get-ADSyncConne
ctor], SynchronizationConfigurationValidationException
+ FullyQualifiedErrorId : Retrieving the COM class factory for remote component with CLSID {835BEE60-8731-4159-8BF
F-941301D76D05} from machine IDP-ADDC02 failed due to the following error: 80040154 IDP-ADDC02.,Microsoft.Identity
Management.PowerShell.Cmdlet.GetADSyncConnectorCmdlet

The registry keys for ADSync get removed during the upgrade , you need to restore these and restart the server ( Save below file a a .reg file )

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\CLSID\{835BEE60-8731-4159-8BFF-941301D76D05}]
"AppID"="{835BEE60-8731-4159-8BFF-941301D76D05}"
@="Microsoft Azure AD Sync"

[HKEY_CLASSES_ROOT\CLSID\{835BEE60-8731-4159-8BFF-941301D76D05}\InprocHandler32]
@="ole32.dll"

[HKEY_CLASSES_ROOT\CLSID\{835BEE60-8731-4159-8BFF-941301D76D05}\ProgID]
@="Microsoft.Metadirectory.Server.1"

[HKEY_CLASSES_ROOT\CLSID\{835BEE60-8731-4159-8BFF-941301D76D05}\VersionIndependentProgID]
@="Microsoft.Metadirectory.Server"

[HKEY_CLASSES_ROOT\AppID\{835BEE60-8731-4159-8BFF-941301D76D05}]
"LocalService"="ADSync"
@="Microsoft Azure AD Sync"
"LaunchPermission"=hex:01,00,04,80,e8,00,00,00,04,01,00,00,00,00,00,00,14,00,\
  00,00,02,00,d4,00,06,00,00,00,00,00,18,00,1f,00,00,00,01,02,00,00,00,00,00,\
  05,20,00,00,00,20,02,00,00,00,00,24,00,0b,00,00,00,01,05,00,00,00,00,00,05,\
  15,00,00,00,37,2f,2d,49,15,53,3f,2a,03,63,45,00,a8,44,00,00,00,00,24,00,0b,\
  00,00,00,01,05,00,00,00,00,00,05,15,00,00,00,37,2f,2d,49,15,53,3f,2a,03,63,\
  45,00,a9,44,00,00,00,00,24,00,0b,00,00,00,01,05,00,00,00,00,00,05,15,00,00,\
  00,37,2f,2d,49,15,53,3f,2a,03,63,45,00,aa,44,00,00,00,00,24,00,1f,00,00,00,\
  01,05,00,00,00,00,00,05,15,00,00,00,37,2f,2d,49,15,53,3f,2a,03,63,45,00,f8,\
  48,00,00,00,00,24,00,0b,00,00,00,01,05,00,00,00,00,00,05,15,00,00,00,37,2f,\
  2d,49,15,53,3f,2a,03,63,45,00,ab,44,00,00,01,05,00,00,00,00,00,05,15,00,00,\
  00,37,2f,2d,49,15,53,3f,2a,03,63,45,00,f4,01,00,00,01,02,00,00,00,00,00,05,\
  20,00,00,00,20,02,00,00
"AccessPermission"=hex:01,00,04,80,fc,00,00,00,18,01,00,00,00,00,00,00,14,00,\
  00,00,02,00,e8,00,07,00,00,00,00,00,18,00,07,00,00,00,01,02,00,00,00,00,00,\
  05,20,00,00,00,20,02,00,00,00,00,24,00,03,00,00,00,01,05,00,00,00,00,00,05,\
  15,00,00,00,37,2f,2d,49,15,53,3f,2a,03,63,45,00,a8,44,00,00,00,00,24,00,03,\
  00,00,00,01,05,00,00,00,00,00,05,15,00,00,00,37,2f,2d,49,15,53,3f,2a,03,63,\
  45,00,a9,44,00,00,00,00,14,00,07,00,00,00,01,01,00,00,00,00,00,05,12,00,00,\
  00,00,00,24,00,07,00,00,00,01,05,00,00,00,00,00,05,15,00,00,00,37,2f,2d,49,\
  15,53,3f,2a,03,63,45,00,f8,48,00,00,00,00,24,00,03,00,00,00,01,05,00,00,00,\
  00,00,05,15,00,00,00,37,2f,2d,49,15,53,3f,2a,03,63,45,00,aa,44,00,00,00,00,\
  24,00,03,00,00,00,01,05,00,00,00,00,00,05,15,00,00,00,37,2f,2d,49,15,53,3f,\
  2a,03,63,45,00,ab,44,00,00,01,05,00,00,00,00,00,05,15,00,00,00,37,2f,2d,49,\
  15,53,3f,2a,03,63,45,00,f4,01,00,00,01,02,00,00,00,00,00,05,20,00,00,00,20,\
  02,00,00
"AuthenticationLevel"=dword:00000006

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