WSUS sync fails with HTTP 503 errors

So my windows update ARD’s were running but no updates were filtering down so i had a look at site status and notice that the software update point was showing sync errors

I then had a dig around in the log files and found these errors in the WCM.log

The fix was to open IIS on the SCCM server and take a look in applications pools , I then I noticed the WsusPool status was “stopped” so I turned this on.

once i started the application pool i went over to Advanced settings on the right hand side , then i changed the Recycling Private memory to 4000000KB (4GB) from the 1843200KB as default.

Next step was to reset the counters on site status and watch the WCM.log and looks for successful syncs/ connections.

Import GUID

To import a computer into sccm using the GUID rather than the default MAC address you first need to find out the GUID of the device.This will be displayed during pxe boot or you can find it within command prompt.The  example is below is in command prompt. There’s many reasons for doing this, in my case the machines in question do not have a built in Ethernet port so the unique identifier will not be the MAC address  but instead will be the GUID.

WMIC csproduct list /format

Once you have this information you can then add the GUID and machine name to sccm by selecting device and import computer information, then select single computer or computers if you have a CSV.

Next fill in the computer name and coping the information in the previous step into the SMSBIOS GUID.

select next until you get to the summery

Once finished right click on the device and select properties and find the BIOS GUID and you should see the correct value. This will never change unless the unique name is used for a different device. The main purpose for this is in my case is I use sccm for OS deployment as the devices use USB Ethernet adapters so I need the GUID to be the unique identifier not the MAC address of the adapter.