Set-ExecutionPolicy Bypass -File 'E:\Script-Popup\Trigger-Start-Popup.ps1'
Set-ExecutionPolicy Bypass -File 'E:\Script-Popup\Popup-Message - Start.ps1'
powerShell -sta -file 'E:\Script-Popup\Popup-Message - Start.ps1' -Confrim:$true
The script always stops for me here and I want it to run automatically, I tried -Force I tried -Confrim:$true
What else can be done to have it automatically confirm it?
I don't mind putting echo Y and enter, a really stupid solution but I've already tried most of them..
You can't put Set-ExecutionPolicy into a script (obviously) but you can use -Force on it. That will skip the confirmation prompt.
Do note that depending on the Scope you set for Set-ExecutionPolicy the policy you set might not have an effect on new powershell instances such as the one started in the third line.
Use Get-ExecutionPolicy -List to see which scope is set to what policy.
As an aside, you don't usually need to set -Confirm to $True as that is its default value (most of the time). Setting -Confirm to $true obviously won't skip any confirmation boxes; to do that you'd need to set it to $False instead.
Related
I am writing a script to prepare our laptops before use. It essentially installs certificates and sets the executionpolicy to AllSigned.
It gets executed by right mouse click and "Run with Powershell". This is a windows 10 standard bypass of executionpolicy and lets the script run on unmodified windows 10 machines (That's what it looks like to me at least). So I can execute my script without the need to change the executionpolicy explicitly.
After the script ran the machine is set up. I just get a warning that I want to suppress.
To do this inside the script I elevate the script to administrator rights with a bypass parameter. This works fine except that I get a warning when setting the AllSigned execution policy. It says that I have a policy defined at a more specific scope.
Note: The command worked and the execution policy is set. It just pops up red and looks like an error. If someone else executes the script I don't want to have questions popping up.
--My question:--
As I know that this behavior is intended I don't want the warning from showing up. How can I suppress the message?
I tried various settings with the switches "WarningAction" and "ErrorAction" but it does not work.
Some Details:
ErrorMessage:
Set-ExecutionPolicy : Windows PowerShell updated your execution policy
successfully, but the setting is overridden by a policy defined at a
more specific scope. Due to the override, your shell will retain its
current effective execution policy of Bypass. Type
"Get-ExecutionPolicy -List" to view your execution policy settings.
For more information please see "Get-Help Set-ExecutionPolicy". At
C:\Users\uwe\Desktop\InstallRootCA\InstallRootCertificate.ps1:46
char:5
+ Set-ExecutionPolicy AllSigned -Scope LocalMachine -Force
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : PermissionDenied: (:) [Set-ExecutionPolicy], SecurityException
+ FullyQualifiedErrorId : ExecutionPolicyOverride,Microsoft.PowerShell.Commands.SetExecutionPolicyCommand
Relevant Code parts from powershell script:
Elevating the script prior to execution:
if (!([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {
Start-Process PowerShell -Verb RunAs "-NoProfile -ExecutionPolicy Bypass -Command `"cd '$pwd'; & '$PSCommandPath';`"";
exit;
}
Setting the Executionpolicy at the end of the script:
Set-ExecutionPolicy AllSigned -Scope LocalMachine
I tried all kinds of flags
-Force
-WarningAction Ignore|SilentlyContinue
-ErrorAction same
But still the red warning pops up.
You can put this command into a try catch statement. The catch statement will handle the errors and if it is empty, nothing will happen if Set-ExecutionPolicy throws an error.
try{
Set-ExecutionPolicy AllSigned -Scope LocalMachine
}
catch {
#Do Nothing
}
Please test it, let me know if it worked and if it did, please mark the post as the answer :)
Nicicalu's answer is effective; let me add some background information:
What Set-ExecutionPolicy emits in your case is a (statement-)terminating error, which is why it is neither affected by -ErrorAction nor by -WarningAction.
Terminating errors can only be handled via:
try / catch, as shown in Nicicalu's answer.
The - rarely used - trap statement
Confusingly, they can be silenced and ignored by setting preference variable $ErrorActionPreference to 'SilentlyContinue'.
That is confusing, because the seemingly equivalent -ErrorAction common parameter does not work; that is, -ErrorAction SilentlyContinue or -ErrorAction Ignore have no effect, because -ErrorAction is designed to operate on non-terminating errors only.
For a comprehensive overview of PowerShell's complex error handling, see this GitHub docs issue.
Taking a step back: It doesn't make sense for Set-ExecutionPolicy to report an error in this scenario, given that the command still succeeded in principle.
Emitting a warning would be more appropriate, as suggested in GitHub issue #12032.
This may not be possible, but I'm looking to run a .ps1 powershell script from a command line, it needs to be run with Elevated privileges, without or bypassing any UAC prompts.
This is from a scripting perspective, with no user interaction. So "Run as administrator" for CMD or Powershell is not an option. There cannot be any UAC prompts to click on as these will most likely be hidden from view.
My command started off like this -
powershell.exe -executionpolicy bypass -file .\remove-default-apps.ps1
This would launch the .ps1 fine, but the script would ultimately fail, as the commands in the script require elevation (Get-AppxPackage | Remove-AppxPackage)
My next attempt was using Powershell to run the script using -
Start-Process PowerShell -ArgumentList '-NoProfile -ExecutionPolicy Bypass -File MyScript.ps1' -Verb RunAs
But still this prompts for elevation.
I can replicate the errors running the script from a non-elevated cmd window manually, but running elevated it works fine.
Anyone know if this is at all possible? Or have any tips to point me in the right direction, Ive tried a lot of other methods (psexec, scheduled task..) but am unable to achieve this.
This is by design. If UAC could be ignored in some method, it would kill the point of UAC. Every malicious piece of software would escalate itself without prompting, just like the wild west before UAC.
With elevation you can set other things to run elevated, whether Scheduled Tasks or otherwise. The most common thing to run these sorts of things enterprise wide is by using configuration management (SCCM, LANDesk, Puppet, Salt, etc) with an agent or to run remotely via PSRemoting/PSexec. (Note the agents have to be installed with admin rights in the first place)
As for the removing provisioned packages, that seems like a task to be done at image time. Either removing it straight from the WIM prior to deploying, removing it in a Task Sequence task after the image has been laid down while still in WinPE, or removing prior to SysPrep. I'm partial to the 2nd method, and keeping all of my imaging tasks programmatic in MDT and having as close to a default Windows image.
If you don't want the prompt, you can turn UAC off (or set to never notify etc Win8+). That can be done by Group Policy, if you are looking to do on many computers. However that would not be wise.
Disabling UAC is not a wise decision. However, it is possible to bypass it using Powershell:
if((([System.Security.Principal.WindowsIdentity]::GetCurrent()).groups -match "S-1-5-32-544")) {
Remove-Item "HKCU:\software\classes\ms-settings" -Force -Recurse
#Script that will run at high integrity
} else {
$reg_path = "HKCU:\software\classes\ms-settings\shell\open\command"
New-Item $reg_path -Force
New-ItemProperty $reg_path -Name "DelegateExecute" -Value $null -Force
Set-ItemProperty $reg_path -Name "(default)" -Value "powershell.exe -NoProfile -ExecutionPolicy Bypass -File $PSCommandPath" -Force
Start-Process "ComputerDefaults.exe"
}
*This script only for Windows 10 users who are already admin. See here for my full answer.
After hitting many brick walls... I eventually solved my problem.
Found this helpful tool -
https://technet.microsoft.com/en-gb/library/d08d6a02-4d5b-4929-87ad-98f03be11898?f=255&MSPPError=-2147217396
Using this along with temporarily disabling UAC prompts via registry allowed the powershelll commands to run with elevation as intended.
My final script was:
REG ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v ConsentPromptBehaviorAdmin /t REG_DWORD /d 0 /f
elevate %SystemRoot%\sysnative\WindowsPowerShell\v1.0\powershell.exe -executionpolicy bypass -file remove-default-apps.ps1
REG ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v ConsentPromptBehaviorAdmin /t REG_DWORD /d 5 /f
I am writing a script to prepare our laptops before use. It essentially installs certificates and sets the executionpolicy to AllSigned.
It gets executed by right mouse click and "Run with Powershell". This is a windows 10 standard bypass of executionpolicy and lets the script run on unmodified windows 10 machines (That's what it looks like to me at least). So I can execute my script without the need to change the executionpolicy explicitly.
After the script ran the machine is set up. I just get a warning that I want to suppress.
To do this inside the script I elevate the script to administrator rights with a bypass parameter. This works fine except that I get a warning when setting the AllSigned execution policy. It says that I have a policy defined at a more specific scope.
Note: The command worked and the execution policy is set. It just pops up red and looks like an error. If someone else executes the script I don't want to have questions popping up.
--My question:--
As I know that this behavior is intended I don't want the warning from showing up. How can I suppress the message?
I tried various settings with the switches "WarningAction" and "ErrorAction" but it does not work.
Some Details:
ErrorMessage:
Set-ExecutionPolicy : Windows PowerShell updated your execution policy
successfully, but the setting is overridden by a policy defined at a
more specific scope. Due to the override, your shell will retain its
current effective execution policy of Bypass. Type
"Get-ExecutionPolicy -List" to view your execution policy settings.
For more information please see "Get-Help Set-ExecutionPolicy". At
C:\Users\uwe\Desktop\InstallRootCA\InstallRootCertificate.ps1:46
char:5
+ Set-ExecutionPolicy AllSigned -Scope LocalMachine -Force
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : PermissionDenied: (:) [Set-ExecutionPolicy], SecurityException
+ FullyQualifiedErrorId : ExecutionPolicyOverride,Microsoft.PowerShell.Commands.SetExecutionPolicyCommand
Relevant Code parts from powershell script:
Elevating the script prior to execution:
if (!([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {
Start-Process PowerShell -Verb RunAs "-NoProfile -ExecutionPolicy Bypass -Command `"cd '$pwd'; & '$PSCommandPath';`"";
exit;
}
Setting the Executionpolicy at the end of the script:
Set-ExecutionPolicy AllSigned -Scope LocalMachine
I tried all kinds of flags
-Force
-WarningAction Ignore|SilentlyContinue
-ErrorAction same
But still the red warning pops up.
You can put this command into a try catch statement. The catch statement will handle the errors and if it is empty, nothing will happen if Set-ExecutionPolicy throws an error.
try{
Set-ExecutionPolicy AllSigned -Scope LocalMachine
}
catch {
#Do Nothing
}
Please test it, let me know if it worked and if it did, please mark the post as the answer :)
Nicicalu's answer is effective; let me add some background information:
What Set-ExecutionPolicy emits in your case is a (statement-)terminating error, which is why it is neither affected by -ErrorAction nor by -WarningAction.
Terminating errors can only be handled via:
try / catch, as shown in Nicicalu's answer.
The - rarely used - trap statement
Confusingly, they can be silenced and ignored by setting preference variable $ErrorActionPreference to 'SilentlyContinue'.
That is confusing, because the seemingly equivalent -ErrorAction common parameter does not work; that is, -ErrorAction SilentlyContinue or -ErrorAction Ignore have no effect, because -ErrorAction is designed to operate on non-terminating errors only.
For a comprehensive overview of PowerShell's complex error handling, see this GitHub docs issue.
Taking a step back: It doesn't make sense for Set-ExecutionPolicy to report an error in this scenario, given that the command still succeeded in principle.
Emitting a warning would be more appropriate, as suggested in GitHub issue #12032.
If I try to change the execution policy, I get a message that says I can't modify the registry because I'm not an administrator.
It seems like this should be possible, since I can run batch files and other .exe and .com programs.
If your domain administrator hasn't forbidden it, you can do this:
Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope CurrentUser
This changes the default execution policy for PowerShell sessions run under the current user, rather than setting it for all users on the machine.
If you instead want to change the execution policy for just the current PowerShell session, you can use this command:
Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope Process
However, if your domain administrator is using the "Turn on Script Execution" group policy, you will not be able to change your execution policy at all. The group policy setting makes the Set-ExecutionPolicy cmdlet ineffective.
You can try and set the policy of the process itself.
powershell.exe -ExecutionPolicy bypass
if you want to have an easy way to run a script myscript.ps1 from the windows shell then all you need is a bat Runmyscript.bat with the following contents:
type myscript.ps1 | powershell -
So simple it makes me wonder why you can't just run the ps1 in the first place, but there we go.
A generic version that prompts for userinput to type the name of the script would be:
set /p filename="Type name of script here: "
type %filename% | powershell -
I suppose if you wanted to, you could also write a generic vbscript script that opens any file in powershell using a dialogue box using this http://todayguesswhat.blogspot.co.uk/2012/08/windows-7-replacement-for.html
how about
$script = Get-Content .\test.ps1
Invoke-Expression $script
This works for me. Try this: cmd /min /C "set __COMPAT_LAYER=RUNASINVOKER && start "" %SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe
The third technique I've found elsewhere on the internet is to use
powershell.exe -EncodedCommand XXXXXXX
where XXXXXXX is the result of
$code = {
#powershell script goes here.
}
}
[convert]::ToBase64String([Text.Encoding]::Unicode.GetBytes($code))
Ref:
http://dmitrysotnikov.wordpress.com/2008/06/27/powershell-script-in-a-bat-file/
I wrote a simple batch file as a PowerShell script, and I am getting errors when they run.
It's in a scripts directory in my path. This is the error I get:
Cannot be loaded because the execution of scripts is disabled on this system.
Please see "get-help about-signing".
I looked in the help, but it's less than helpful.
It could be PowerShell's default security level, which (IIRC) will only run signed scripts.
Try typing this:
set-executionpolicy remotesigned
That will tell PowerShell to allow local (that is, on a local drive) unsigned scripts to run.
Then try executing your script again.
You need to run Set-ExecutionPolicy:
Set-ExecutionPolicy Restricted <-- Will not allow any powershell scripts to run. Only individual commands may be run.
Set-ExecutionPolicy AllSigned <-- Will allow signed powershell scripts to run.
Set-ExecutionPolicy RemoteSigned <-- Allows unsigned local script and signed remote powershell scripts to run.
Set-ExecutionPolicy Unrestricted <-- Will allow unsigned powershell scripts to run. Warns before running downloaded scripts.
Set-ExecutionPolicy Bypass <-- Nothing is blocked and there are no warnings or prompts.
Use:
Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope Process
Always use the above command to enable to executing PowerShell in the current session.
I was able to bypass this error by invoking PowerShell like this:
powershell -executionpolicy bypass -File .\MYSCRIPT.ps1
That is, I added the -executionpolicy bypass to the way I invoked the script.
This worked on Windows 7 Service Pack 1. I am new to PowerShell, so there could be caveats to doing that that I am not aware of.
[Edit 2017-06-26] I have continued to use this technique on other systems including Windows 10 and Windows 2012 R2 without issue.
Here is what I am using now. This keeps me from accidentally running the script by clicking on it. When I run it in the scheduler I add one argument: "scheduler" and that bypasses the prompt.
This also pauses the window at the end so I can see the output of PowerShell.
if NOT "%1" == "scheduler" (
#echo looks like you started the script by clicking on it.
#echo press space to continue or control C to exit.
pause
)
C:
cd \Scripts
powershell -executionpolicy bypass -File .\rundps.ps1
set psexitcode=%errorlevel%
if NOT "%1" == "scheduler" (
#echo Powershell finished. Press space to exit.
pause
)
exit /b %psexitcode%
Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope Process
The above command worked for me even when the following error happens:
Access to the registry key 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PowerShell\1\ShellIds\Microsoft.PowerShell' is denied.
Also it's worth knowing that you may need to include .\ in front of the script name. For example:
.\scriptname.ps1
The command set-executionpolicy unrestricted will allow any script you create to run as the logged in user. Just be sure to set the executionpolicy setting back to signed using the set-executionpolicy signed command prior to logging out.
We can bypass execution policy in a nice way (inside command prompt):
type file.ps1 | powershell -command -
Or inside powershell:
gc file.ps1|powershell -c -
On Windows 10:
Click change security property of myfile.ps1 and change "allow access" by right click / properties on myfile.ps1
It would be ideal to bypass execution policies e.g. through
powershell -executionpolicy bypass -File .\MYSCRIPT.ps1
Unfortunately this can still be prevented by group policies. As a workaround, you can encode your script as Base64 by running this in PowerShell:
[Convert]::ToBase64String([Text.Encoding]::Unicode.GetBytes((Get-Content .\MYSCRIPT.ps1)))
Then execute the result like this:
powershell.exe -EncodedCommand "put-your-base64-string-here"
Caveat: This won't work with scripts that require parameters.