If the Desktop does not launch, verify that no other software in the environment is using port 443. If you are applying this fix on a Server Core install, you’ll need to connect remotely to the IIS instance to apply the fix.If you cannot log in to the Horizon Client, verify that the version of the VMware Horizon Client you are using is compatible with VMware View 5.1 or higher. The issue should now be resolved and your WSUS server should no longer be crashing. Restart IIS by running “iisreset” from an administrative command prompt, restarting the server, or selecting “Restart” under “Manage Server” when looking at the default pane in IIS when the server is selected.Either change this to “0” (as shown below) to set no memory limit, or increase the limit to the value you prefer. In the “Advanced Settings” window, scroll down until you see “Private Memory Limit (KB)”.On the right hand side under “Application Pools” heading, right-click on “WsusPool” and select “Advanced Settings”.On the left hand side under “Connections”, expand the server, and select “Application Pools”.On the server running WSUS and IIS, open the “Internet Information Services (IIS) Manager” inside of the “Windows Administrative Tools” (found in the start menu, or Control Panel).To resolve this issue, we need to adjust the max Previously, I noticed database corruption on a WSUS SQL Express database when this issue occurred, so I recommend applying the fix on a fresh install of WSUS. Ultimately I believe this causes the IIS worker process to crash since it has run out of memory, and the pending command (whether it’s a synchronization or something else) fails to complete. This issue occurs because the WSUS application pool in IIS “WsusPool” has reached it’s maximum private memory limit and attempts to recycle the memory usage. WSUS 503 Error: Connection Error The Problem You will also see the below error message when attempting to use the WSUS MMC. : The remote server returned an error: (503) Server Unavailable.Īt ()Īt .HmtWebServices.CheckContentDirWebAccess(EventLoggingType type, HealthEventLogger logger) Event ID: 12072 - Windows Server Update Servicesĭescription: The WSUS content directory is not accessible.Event ID: 12052 - Windows Server Update Servicesĭescription: The DSS Authentication Web Service is not working.Event ID: 12042 - Windows Server Update Servicesĭescription: The SimpleAuth Web Service is not working. Event ID: 12022 - Windows Server Update Servicesĭescription: The Client Web Service is not working.Event ID: 12032 - Windows Server Update Servicesĭescription: The Server Synchronization Web Service is not working.Event ID: 12012 - Windows Server Update Servicesĭescription: The API Remoting Web Service is not working. Event ID: 12002 - Windows Server Update Servicesĭescription: The Reporting Web Service is not working.Event ID: 13042 - Windows Server Update Services. Looking at the server event log, you’ll notice multiple application errors: When the issue occurs, all processes will appear to be running on the server. One would have thought they would have resolved this issue on a new server operating system. Before realizing what the issue was, I attempted to re-install WSUS and IIS from scratch numerous times until I came across old notes. Recently, I deployed Windows Server Update Services on a new Windows Server 2019 – Server Core install, and experienced this issue during the first synchronization. I originally experienced this on Windows Server Update Services running on Windows Server 2012 R2 and applied the fix. On a fresh or existing WSUS install, you may notice that the WSUS Administrator MMC applet stops functioning and present the error “Error: Connection Error – An error occurred trying to connect to the WSUS Server.”
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