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RyanD79's avatar
RyanD79
Copper Contributor
Jun 16, 2022

Connection Error after upgrading to version 2203

On Monday, I upgraded Endpoint Manager to version 2203. Everything appears to be working fine on the server itself. We only have one Endpoint Manager server with SQL collocated. After upgrading the E...
Endpoint protection
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  • RyanD79's avatar
    RyanD79
    Copper Contributor
    Jan 30, 2023
    I'm sorry, I'm just now seeing your post. I don't think I ever received an email notifying me of it. I hope you were able to resolve the issue by now.

    As you may have figured out by now, this was due to a certificate error in Configuration Manager version 2203. Microsoft eventually pushed out a hotfix via the configuration manager console specifically for this issue. Prior to the update being released, I copied the certificate from my configuration manager server to my local workstation and that temporarily resolved the issue for me.


    I've upgraded to version 2207 since then with no issues but looking at a list of the hotfixes for ConfigMgr 2203, I'm pretty sure it was hotfix KB14480034. It looks like that update was rolled into KB14244456.
    • Bob_Loblaw750's avatar
      Bob_Loblaw750
      Copper Contributor
      Apr 03, 2023
      Here is a link that may help you guys with this issue if it remains unresolved...

      "For any machine with the Configuration Manager console, if it's using a proxy server, the console fails to connect to the administration service. For example, when trying to access the Security nodes, you may see errors that the administration service isn't enabled or available. The SmsAdminUI.log file shows errors such as, Failed to get a response for OData query.
      To work around this issue, either remove the proxy configuration from the machine, or make the following configuration change:
      Manually edit the following XML file: C:\Program Files (x86)\Microsoft Endpoint Manager\AdminConsole\bin\Microsoft.ConfigurationManagement.exe.config

      Configure the <defaultproxy> behavior with one of the following options:

      Set enabled="false"
      Add the FQDN of the SMS Provider to the <bypasslist>.
      For more information, see <defaultProxy> Element (Network Settings)."

      https://learn.microsoft.com/en-us/mem/configmgr/develop/adminservice/overview

      https://learn.microsoft.com/en-us/mem/configmgr/core/plan-design/network/proxy-server-support

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