![]() ![]() Select distinct SMS_R_System.Name, SMS_R_System.MACAddresses, SMS_R_System.SMBIOSGUID from SMS_R_System where SMS_R_System.SMBIOSGUID = #PRM:SMS_R_System.SMBIOSGUID# order by SMS_R_System. The query was sourced from the following forum post: However in this case you should really investigate why it is you have duplicate GUIDs as this should not happen. Use the below query in SCCM to help you identify the culprit. On the Client Approval and Conflicting Records tab, under Duplicate hardware identifiers section, click Add. On the Home tab, select the site and choose Hierarchy Settings. In the Configuration Manager console, go to Administration > Overview > Site Configuration > Sites. In some instances it may be a duplicate GUID causing you issues instead. We will now look at steps to manage SCCM duplicate hardware identifiers. Deleting the entry from the SCCM database will then allow you to successfully initiate a PXE boot and image deployment. Using that query we were able to find that since we were using the same USB to Ethernet dongle it was already registered in SCCM and hence not being presented as an unknown device. select distinct SMS_R_System.Name, SMS_R_System.MACAddresses from SMS_R_System where SMS_R_System.MACAddresses = #PRM:SMS_R_System.MACAddresses# order by SMS_R_System.MACAddresses On this TechNet blog there is a simple query to help you search the SCCM database for a MAC address. The log also handily shows the MAC address and GUID of the device in questioin. Since we were only advertising to unknown computers the device would never begin the process. ![]() We were trying to image multiple devices using the same USB to Ethernet dongle.Īfter initiating PXE boot using the power + volume down button combination, the device connected to PXE over IPv4 and then quickly skipped over to attempting to connect via IPv6.Īfter checking the SMSPXE.log file on the SCCM 2012 R2 server I noticed that it was reporting that the device already existed in the database. ![]() This was an interesting issue we encountered while trying to image a bunch of new Microsoft Surface Pro 3 devices. SCCM PXE boot and duplicate MAC addresses ![]()
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