Added KI per Paul C request

Author: ronmiab

azure-stack/hci/known-issues-2408-1.md

@@ -61,6 +61,7 @@ The following table lists the known issues from previous releases:
 | Networking <!--29180461--> | When a node is configured with a proxy server that has capital letters in its address, such as **HTTP://10.100.000.00:8080**, Arc extensions fail to install or update on the node in existing builds, including version 2408.1. However, the node remains Arc connected. | Follow these steps to mitigate the issue: </br><br> 1. Set the environment values in lowercase. `[System.Environment]::SetEnvironmentVariable("HTTP_PROXY", "http://10.100.000.00:8080", "Machine")`. </br><br> 2. Validate that the values were set. `[System.Environment]::GetEnvironmentVariable("HTTP_PROXY", "Machine").` </br><br> 3. Restart Arc services. </br><br> `Restart-Service himds` </br><br> `Restart-Service ExtensionService` </br><br> `Restart-Service GCArcService` </br><br> 4. Signal the AzcmaAgent with the lowercase proxy information. </br><br> `& 'C:\Program Files\AzureConnectedMachineAgent\azcmagent.exe' config set proxy.url http://10.100.000.00:8080` </br><br>`& 'C:\Program Files\AzureConnectedMachineAgent\azcmagent.exe' config list` |
 | Networking <!--29229789--> | When Arc machines go down, the "**All Clusters**" page, in the new portal experience shows a "**PartiallyConnected**" or "**Not Connected Recently** status. Even when the Arc machines become healthy, they may not show a "**Connected**" status. | There's no known workaround for this issue. To check the connectivity status, use the old experience to see if it shows as "**Connected**". |
 | Security <!--29333930--> | The SideChannelMitigation security feature may not show an enabled state even if it's enabled. | There's no workaround in this release. If you encounter this issue, contact Microsoft Support to determine next steps. |
+| Upgrade <!--29319539-->| When upgrading the stamp from 2311 or prior builds to 2408 or later, add node and repair node operations may fail. For example, you could see an error: `Type 'AddAsZHostToDomain' of Role 'BareMetal' raised an exception`. | There's no workaround in this release. If you encounter this issue, contact Microsoft Support to determine next steps. |
 | Arc VM management | The Mochostagent service might appear to be running but can get stuck without updating logs for over a month. You can identify this issue by checking the service logs in `C:\programdata\mochostagent\logs` to see if logs are being updated. | Run the following command to restart the mochostagent service: `restart-service mochostagent`. |
 | Update | When viewing the readiness check results for an Azure Stack HCI cluster via the Azure Update Manager, there might be multiple readiness checks with the same name.  |There's no known workaround in this release. Select **View details** to view specific information about the readiness check. |
 | Deployment<!--27312671--> | In some instances, during the registration of Azure Stack HCI servers, this error might be seen in the debug logs: *Encountered internal server error*. One of the mandatory extensions for device deployment might not be installed. |Follow these steps to mitigate the issue: <br><br> `$Settings = @{ "CloudName" = $Cloud; "RegionName" = $Region; "DeviceType" = "AzureEdge" }` <br><br> `New-AzConnectedMachineExtension -Name "AzureEdgeTelemetryAndDiagnostics"  -ResourceGroupName $ResourceGroup -MachineName $env:COMPUTERNAME -Location $Region -Publisher "Microsoft.AzureStack.Observability" -Settings $Settings -ExtensionType "TelemetryAndDiagnostics" -EnableAutomaticUpgrade` <br><br> `New-AzConnectedMachineExtension -Name "AzureEdgeDeviceManagement"  -ResourceGroupName $ResourceGroup -MachineName $env:COMPUTERNAME -Location $Region -Publisher "Microsoft.Edge" -ExtensionType "DeviceManagementExtension"`<br><br> `New-AzConnectedMachineExtension -Name "AzureEdgeLifecycleManager"  -ResourceGroupName $ResourceGroup -MachineName $env:COMPUTERNAME -Location $Region -Publisher "Microsoft.AzureStack.Orchestration" -ExtensionType "LcmController"` <br><br>`New-AzConnectedMachineExtension -Name "AzureEdgeRemoteSupport"  -ResourceGroupName $ResourceGroup -MachineName $env:COMPUTERNAME -Location $Region -Publisher "Microsoft.AzureStack.Observability" -ExtensionType "EdgeRemoteSupport" -EnableAutomaticUpgrade`  |

azure-stack/hci/known-issues-2408.md

@@ -52,6 +52,7 @@ The following table lists the known issues in this release:
 | Networking <!--29229789--> | When Arc machines go down, the "**All Clusters**" page, in the new portal experience shows a "**PartiallyConnected**" or "**Not Connected Recently** status. Even when the Arc machines become healthy, they may not show a "**Connected**" status. | There's no known workaround for this issue. To check the connectivity status, use the old experience to see if it shows as "**Connected**". |
 | Security <!--29333930--> | The SideChannelMitigation security feature may not show an enabled state even if it's enabled. This happens when using Windows Admin Center (Cluster Security View) or when this cmdlet returns *False*: `Get-AzSSecurity -FeatureName SideChannelMitigation`. | There's no workaround in this release to fix the output of these applications. <br> To validate the expected value, run the following cmdlet: <br> `Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management' -name "FeatureSettingsOverride*"`<br> The expected output is: <br> FeatureSettingsOverride: 83886152<br> FeatureSettingsOverrideMask: 3 <br> If your output matches the expected output, you can safely ignore the output from Windows Admin Center and `Get-AzSSecurity` cmdlet.|
 | Arc VM management | The Mochostagent service might appear to be running but can get stuck without updating logs for over a month. You can identify this issue by checking the service logs in `C:\programdata\mochostagent\logs` to see if logs are being updated. | Run the following command to restart the mochostagent service: `restart-service mochostagent`. |
+| Upgrade <!--29319539--> | When upgrading the stamp from 2311 or prior builds to 2408 or later, add node and repair node operations may fail. For example, you could see an error: `Type 'AddAsZHostToDomain' of Role 'BareMetal' raised an exception`. | There's no workaround in this release. If you encounter this issue, contact Microsoft Support to determine next steps. |
 
 ## Known issues from previous releases