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I wanted to dual sign my exe so that the XP and Vista users can use the software. But when i dual sign the exe with SHA1 and SHA256 timestamps, In windows7 only 1 timestamp is shown.

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To dual sign I used signtool of windows sdk 8.1 and my certificate is of SHA256 and the signer pc contains the windows server 2012 R2. And I dual signed using the command...

signtool.exe sign /n "certificate name"  /t http://timestamp.comodoca.com /v foo.exe

signtool.exe sign /n "certificate name" /fd sha256 /tr http://timestamp.comodoca.com/?td=sha256 /td sha256 /as /v foo.exe

The dual signing is working perfectly on windows8 and above OS's. Did I left anything? or doing wrong some where? Please help me on this.

4

Windows 7 doesn't support SHA256 signatures by default. You need to apply this update, in order to get the desired functionality.

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