How to Set Machine Environment Variable longer than 4095 characters in Powershell?

Question

I have a very long string I am trying to store in a Machine level Environment Variable.

Set-Item -Path Env:\... seems to work, but I dont see a way to set a machine level environment variable with this, only local variables.

[Environment]::SetEnvironmentVariable(..., ..., "Machine")

Has a 4095 character limit and truncates.

$Enviro = ([Microsoft.Win32.Registry]::LocalMachine).OpenSubKey("SYSTEM\CurrentControlSet\Control\Session Manager\Environment", $True)
$Enviro.SetValue(..., ..., [Microsoft.Win32.RegistryValueKind]::ExpandString);
$Enviro.Close()

Also seems to have a similar limit and truncates the string.

$Enviro = "registry::HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment\"
Set-ItemProperty -Path $Enviro -Name ... -Value ...

Also, once again, same issue. Truncates to 4095.

What other options do I have?

To people that keep linking the "Environment variables not working properly" article, that doesnt answer this question. That article covers reading from the environment/registery, not writing to it. This is the exact opposite use case. Please go over my code above and you will notice I tried Set-ItemProperty and it does not work.

answered in-depth [here](https://stackoverflow.com/a/65693649/8431238) — another victim of the mouse, Jun 09 '22 at 17:38
This answer is the other way around. I am writing to the Enviro, not reading. When I write and then go look at the produced result via Control Panel, the value is truncated. As per my statement above, `Set-Item` is working fine, but cannot set machine variables as far as I can see. — Steffen Cole Blake, Jun 09 '22 at 17:45
That is the exact same question that was posted at the top, nope, does not answer — Steffen Cole Blake, Jun 09 '22 at 17:58

How to Set Machine Environment Variable longer than 4095 characters in Powershell?

0 Answers0