DismAddDriverApi lets you add Unsigned Driver?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(240, 19%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERS%3C/text%3E%3C/svg%3E)
Ranveer Singh
0
Reputation points
HRESULT WINAPI DismAddDriver( In DismSession Session, In PCWSTR DriverPath, In BOOL ForceUnsigned )
I am using the above function to add driver to os offline os image with ForceUnsigned set to false but still i am able to add unsigned drivers why?
Developer technologies | C#
{count} votes
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RLWA32 50,066 Reputation points2025-08-07T15:18:00.29+00:00 The documentation of the ForceUnsigned parameter at DismAddDriver function says "A Boolean value that specifies whether to accept unsigned drivers to an x64-based image. Unsigned drivers will automatically be added to an x86-based image." So if you are working with an x86-based image it appears that the parameter is ignored.
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Ranveer Singh 0 Reputation points
2025-08-07T15:21:55.25+00:00 I am working with x64 image
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Viorel 123.6K Reputation points2025-08-07T15:28:10.7433333+00:00 Maybe it is signed?
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(115.19999999999999, 47%, 21%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESN%3C/text%3E%3C/svg%3E)
Starry Night 30 Reputation points2025-08-08T08:10:26.05+00:00 Have you checked the DISM API Driver Functions Sample here?
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