在NSIS中运行powershell命令会抛出对路径的访问已被拒绝

Question

We need to run a powershell comman in our NSIS installer. Running the command in the powershell is no problem and running the command with

'powershell.exe "& "our command here"'

in the windows command line is no problem either. If we use the PowerShellExec Macro

${PowerShellExec} "our command"

or if we use the NSexec command does not matter. We always get the error message that "The access to the path has been denied". We found out that it might be a problem with the security policy of the powershell. Is there a way to change the security policy in NSIS or is there another way to call the command inside the installer?

Answer 1

Assuming you're testing on systems that only have PowerShell v2 installed, this appears to be a known issue with PowerShell v2 .

There are several workarounds mentioned in both the Nullsoft forum and on MS Connect. The most straightforward solution is to add -InputFormat None to the command line, but that is undocumented.

Alternately, if it's the execution policy that's throwing you, you can try adding -ExecutionPolicy Bypass to the command line.