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Modern Work App Consult Blog
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Signing a MSIX package with Azure Key Vault

Matteo Pagani's avatar
Matteo Pagani
Icon for Microsoft rankMicrosoft
Jun 03, 2020
Signing is one of the most critical aspects when working with MSIX packages. One of the key goals of MSIX as deployment technology is to ensure safety and trust and signing is one of the ways to achi...
Updated Jun 04, 2020
Version 7.0
florisverhoeven's avatar
florisverhoeven
Copper Contributor
Mar 25, 2021

I'm signing in my Azure DevOps release pipeline following your steps. I have a .MSIX file. I get an error during the signing step: 

Signing failed with error 800B0003 for file 'MyApp.msix"
 
The strange thing is that I can execute the exact same PS script locally, after downloading the identical artifact. So I'm using the exact same .MSIX file. Any clue as to what might be causing this specific error?
 
The exact output from the PS script:
2021-03-25T22:03:18.6524679Z trce: AzureSignTool.Program[0]
2021-03-25T22:03:18.6525662Z       Retrieving certificate Signing.
2021-03-25T22:03:19.2825583Z trce: AzureSignTool.Program[0]
2021-03-25T22:03:19.2826215Z       Acquiring access token from client id
2021-03-25T22:03:19.9312300Z trce: AzureSignTool.Program[0]
2021-03-25T22:03:19.9312852Z       Acquired access token from client id
2021-03-25T22:03:20.4647216Z trce: AzureSignTool.Program[0]
2021-03-25T22:03:20.4648454Z       Retrieved certificate Signing.
2021-03-25T22:03:20.4715238Z trce: AzureSignTool.Program[0]
2021-03-25T22:03:20.4717032Z       Creating context
2021-03-25T22:03:20.7156883Z info: AzureSignTool.Program[0]
2021-03-25T22:03:20.7157507Z       => File: .\MyApp.msix
2021-03-25T22:03:20.7158844Z       Signing file .\MyApp.msix
2021-03-25T22:03:20.7256277Z trce: AzureSignTool.Program[0]
2021-03-25T22:03:20.7257583Z       => File: .\MyApp.msix
2021-03-25T22:03:20.7258892Z       Getting SIP Data
2021-03-25T22:03:20.7275778Z trce: AzureSignTool.Program[0]
2021-03-25T22:03:20.7276460Z       => File: .\MyApp.msix
2021-03-25T22:03:20.7276847Z       Calling SignerSignEx3
2021-03-25T22:03:20.7684005Z fail: AzureSignTool.Program[0]
2021-03-25T22:03:20.7684880Z       => File: .\MyApp.msix
2021-03-25T22:03:20.7685787Z       Signing failed with error 800B0003 for file .\MyApp.msix.
2021-03-25T22:03:20.7686308Z info: AzureSignTool.Program[0]
2021-03-25T22:03:20.7686725Z       => File: .\MyApp.msix
2021-03-25T22:03:20.7687149Z       Stopping file signing.
2021-03-25T22:03:20.7704214Z info: AzureSignTool.Program[0]
2021-03-25T22:03:20.7704955Z       Successful operations: 0
2021-03-25T22:03:20.7705687Z info: AzureSignTool.Program[0]
2021-03-25T22:03:20.7706193Z       Failed operations: 1