GUID and the UUID may not match System Center Configuration Manager (SCCM)
Summary: The globally Unique Identifier (GUID) and the Universally Unique Identifier UUID may not match in System Center Configuration Manager (SCCM).
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Symptoms
Not applicable
Cause
Due to differences in encoding and storage of the GUID/UUID between the BIOS and Windows, some of the data in the GUID stream is transposed when queried by SCCM.
Resolution
Manually entering the GUID seen at Preboot eXecution Environment (PXE) boot does not work match what is in the SCCM server.
Due to differences in encoding and storage of the GUID/UUID between the BIOS and Windows, some of the data in the GUID stream is transposed when queried by SCCM. See examples below:
Figure 1: PXE GUID Readout
Figure 2: SCCM UUID Readout
Convert the GUID to the UUID
Figure 3: Convert the GUID to the UUID
Most computers fall into this transposition algorithm; use this if entering the UUID manually into SCCM is wanted.
Article Properties
Article Number: 000148681
Article Type: Solution
Last Modified: 21 Jul 2025
Version: 5
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