The RTC and CS groups are listed as Global group. I changed them to Universal groups and the install completed as expected.
Skype for Business Server 2019 Install Fails
I am attempting to install a Skype for Business Server 2019 to perform a side-by-side migration from SFB 2015.
When I run the Deployment Wizard - Deploy - Active Directory preparation, the install fails on Step 3 - prepare current forest.
I receive the following errors in the log
TaskFailed: Task execution failed. 11/17/2021 11:21:11 AM Error
Error: The type of group "RTCUniversalGlobalWriteGroup" is different from required group type.
Details
Type: DeploymentException
Stack Trace
at Microsoft.Rtc.Management.Deployment.LcForest.VerifyAccountObject(ADGroup group, DOMAIN_ACCTPREP_INFO groupInfo)
at Microsoft.Rtc.Management.Deployment.LcForest.DomainPrepCreateAccounts(DOMAIN_ACCTPREP_INFO[] groupsInfo)
at Microsoft.Rtc.Management.Deployment.LcForest.ProcessLcsGroups(LcAction eAction)
at Microsoft.Rtc.Management.Deployment.LcForest.PrepareForest()
TaskFailed: Task execution failed. 11/17/2021 11:21:11 AM Error
Error: The type of group "RTCUniversalGlobalWriteGroup" is different from required group type.
Type: DeploymentException
Stack Trace
at Microsoft.Rtc.Management.Deployment.LcForest.VerifyAccountObject(ADGroup group, DOMAIN_ACCTPREP_INFO groupInfo)
at Microsoft.Rtc.Management.Deployment.LcForest.DomainPrepCreateAccounts(DOMAIN_ACCTPREP_INFO[] groupsInfo)
at Microsoft.Rtc.Management.Deployment.LcForest.ProcessLcsGroups(LcAction eAction)
at Microsoft.Rtc.Management.Deployment.LcForest.PrepareForest()
at Microsoft.Rtc.Management.Deployment.Tasks.ForestPrepareTask.Action()
Any idea why this may be happening?