Platform Configuration Register 7 Binding Not Possible Message When Used with TPM and BitLocker
Summary: Information about Platform Configuration Register (PCR) 7 giving a "PCR 7 binding not possible" message when used with TPM and BitLocker.
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This article is not tied to any specific product.
Not all product versions are identified in this article.
Symptoms
Cause
This is working as designed according to Microsoft.
The BIOS extends the certificates for any optional ROMs in the system to determine the value of PCR7. If this value contains a third-party UEFI CA, it does not allow PCR7 and asks for 0,2,4,11 instead. Meaning that any system with a PCI graphics, network, or storage controller that has an OROM that triggers this process and revert to the 0,2,4,11 value. In the configuration of a laptop where the OROM is built into the system BIOS, it does not trigger this procedure and supports PCR7. In the configuration of a system with a PCI graphics card, it triggers this procedure and then go back. The same applies to any computer with a PCI graphics solution or another PCI card with an OROM.
Resolution
PCR7
Microsoft recommends that you use PCR 0,2,4,11.
More information can be found in the following Microsoft knowledge article: Windows Server Shows PCR7 Configuration as "Binding not Possible"
Affected Products
Alienware, Dell All-in-One, Dell Pro All-in-One, Dell Pro Max Micro, Dell Pro Max Slim, Dell Pro Max Tower, Dell Pro Micro, Dell Pro Slim, Dell Pro Tower, Dell Slim, Dell Tower, Inspiron, OptiPlex, Vostro, XPS, G Series, G Series, Alienware
, Dell Plus, Dell Pro, Dell Pro Max, Dell Pro Premium, Inspiron, Latitude, Dell Pro Rugged, Vostro, XPS, Fixed Workstations, Mobile Workstations, Dell Pro Max Micro XE FCM2250, Dell Pro Max Slim XE FCS1250, Dell Pro Max Tower T2 XE FCT2250, Dell Pro Max 16 XE MC16250, Dell Pro Micro Plus XE QBM1250, Dell Pro Slim Plus XE5 QBS1250, Dell Pro Tower Plus XE5 QBT1250
...
Article Properties
Article Number: 000203995
Article Type: Solution
Last Modified: 13 May 2025
Version: 5
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