Forum Discussion
Running a powershell script through a live response session
I had the exact same issue. I had my code signing certificate installed in the current user's "Trusted Publishers" so I could both sign my script and run my script in Powershell. But when I tried to run the script in Live Response, it gave me the "AuthorizationManager check failed" error.
The code signing certificate needs to be installed into Local Computer/Trusted Publishers. Live Response shell runs as SYSTEM, and it needs to see your code signing certificate in order to trust the Powershell script. I'm still testing, but it sounds like you need to push out your code signing certificate to Local Computer/Trusted Publishers for your entire fleet. (Make sure when you export your code signing certificate to NOT include your private key, otherwise your certificate could be used by others to sign code)
I assumed that getting a code signing certificate from a trusted CA meant I wouldn't have to install my certificate on all computers but that doesn't appear to be the case.
I had the exact same issue. I had my code signing certificate installed in the current user's "Trusted Publishers" so I could both sign my script and run my script in Powershell. But when I tried to run the script in Live Response, it gave me the "AuthorizationManager check failed" error.
The code signing certificate needs to be installed into Local Computer/Trusted Publishers. Live Response shell runs as SYSTEM, and it needs to see your code signing certificate in order to trust the Powershell script. I'm still testing, but it sounds like you need to push out your code signing certificate to Local Computer/Trusted Publishers for your entire fleet. (Make sure when you export your code signing certificate to NOT include your private key, otherwise your certificate could be used by others to sign code)
I assumed that getting a code signing certificate from a trusted CA meant I wouldn't have to install my certificate on all computers but that doesn't appear to be the case.TheDilly Thanks ill check that. However the signing cert I have used if a fully correct suburbanite CA from the domain PKI. So should already be fully trusted on all machines in the domain
- Mine is too. I assumed that since all the computers in the domain trust the CA I got the code signing certificate from, everyone would trust my certificate. But that doesn't appear to be the case.
The Scripting Guy lays out the step by step when using an internal PKI:
https://devblogs.microsoft.com/scripting/hey-scripting-guy-how-can-i-sign-windows-powershell-scripts-with-an-enterprise-windows-pki-part-1-of-2/
https://devblogs.microsoft.com/scripting/hey-scripting-guy-how-can-i-sign-windows-powershell-scripts-with-an-enterprise-windows-pki-part-2-of-2/
And I also reached out to Microsoft Support about the "AuthorizationManager check failed" and they told me to put the certificate in the Trusted Publisher store for the Local Machine. It did solve the problem.
So why use a trusted CA if we have to distribute the certificate anyway?
- Hi af-00001
Ok, well at least that’s two of us in the same boat! I haven’t found a solution yet, which is really annoying - you’d think if can run via a non-admin user, it should be able to run via the trusted connection. I hope someone from MS eventually see’s this and can offer some help\wisdom- On monday I’m going to see if I can permit the file through 365 Defender
