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How to Sign Excel Macro Projects with SignTool using KSP Library?

ID: a74f0f57-b530-5435-881a-40178daba520

STIX ID: report--a74f0f57-b530-5435-881a-40178daba520

Feed Name: Security Boulevard

Date Published: 2026-05-28

Date Updated: 2026-05-28

Author: Janki Mehta

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This guide describes how to configure Windows and Microsoft Office SIPs, register msosip.dll and msosipx.dll, and use the 32-bit Microsoft SignTool with the DigiCert KeyLocker Key Storage Provider to digitally sign and verify Excel macro-enabled (.xlsm) files, including prerequisites, example commands, and parameter explanations.

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