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  1. PowerShell StackOverFlowException: get-childitem -path HKLM:\ -recurse -include *Windows*

    PowerShell has a bug in it which causes a "StackOverFlowException" when running the following command:
    get-childitem -path HKLM:\ -recurse -include *Windows*

    It was originally reproduced while looking for something different than:
    Windows

    This is consistently reproducible in latest updates applied of Windows 10 x64 Business and Home, with both PowerShell.exe, and ISE, x86 and standard.

    $PSVersionTable.PSVersion

    Major Minor Build Revision
    ----- ----- ----- --------
    5 1 16299 98

    1 vote
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      0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
    • Fix LoadDefaultTypesFiles when using out of process runspace

      Fix for "Object reference not set to an instance of an object." when using LoadDefaultTypeFiles() with out of process runspace

      Reproduce:
      TypeTable.LoadDefaultTypeFiles()

      Reproduce underlying cause:
      Copy C:\Windows\SysWOW64\WindowsPowerShell\v1.0\types.ps1xml to another name and run:
      var typeTable = new TypeTable(new List<string> { @"C:\Windows\SysWOW64\WindowsPowerShell\v1.0\types-debug.ps1xml" });
      Console.WriteLine(typeTable);

      The error is:
      "There were errors loading TypeTable. Look in the Errors property to get detailed error messages."
      , C:\Windows\SysWOW64\WindowsPowerShell\v1.0\types-debug.ps1xml(3003) : Error in type "System.Security.AccessControl.ObjectSecurity": The "Type" node must have "Members", "TypeConverters", or "TypeAdapters".
      , C:\Windows\SysWOW64\WindowsPowerShell\v1.0\types-debug.ps1xml(3036) : Error: CodeProperty should use a getter or setter method.
      , C:\Windows\SysWOW64\WindowsPowerShell\v1.0\types-debug.ps1xml(3037) : Error: Unable to find type [Microsoft.PowerShell.Commands.SecurityDescriptorCommandsBase].
      , C:\Windows\SysWOW64\WindowsPowerShell\v1.0\types-debug.ps1xml(3029) :…

      1 vote
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        0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
      • code execution not synchronously when using "| Select-Object...."

        When using " | Select-Object......" then code execution behave like it's not running synchronously.
        Example:
        Get-WmiObject Win32_NetworkAdapter | Where-Object {$_.PhysicalAdapter -eq $true} | Select-Object DeviceID, Name
        Read-Host "Press key to continue"

        The result will be printed AFTER the Read-Host command, nut before as you would expect.

        A workaround is to add " | Out-Host"

        1 vote
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          0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
        • PSCredential prompts for credentials even without Credential() attribute.

          Steps to reproduce
          ------------------

          ```powershell
          function Test-CredentialAsString {
          Param (
          [Parameter()]
          [PSCredential]$Credential
          )
          $Credential.UserName
          }
          Test-CredentialAsString -Credential 'usernameAsString'
          ```

          Expected behavior
          -----------------

          Error:
          ```none
          Test-CredentialAsString : Cannot process argument transformation on parameter 'Credential'. Cannot convert the "usernameAsString" value of type "System.String" to type "System.Management.Automation.PSCredential".
          ```
          Actual behavior
          ---------------

          Prompts user for credentials (i.e. the same behaviour we'd expect had the `[System.Management.Automation.Credential()]` attribute been used.

          Environment data
          ----------------

          ```powershell
          > (Get-WmiObject -class Win32_OperatingSystem).Version
          6.1.7601
          ```

          ```powershell
          > $PSVersionTable
          Name Value
          ---- -----
          PSVersion 5.1.14409.1012
          PSEdition Desktop
          PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
          BuildVersion 10.0.14409.1012
          CLRVersion 4.0.30319.42000
          WSManStackVersion 3.0
          PSRemotingProtocolVersion 2.3
          SerializationVersion 1.1.0.1 …

          1 vote
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            0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
          • Behaviour of `System.Management.Automation.Credential()` in NonInteractive session

            Steps to reproduce
            ------------------

            **Demo.ps1**

            ```powershell
            function Test-CredentialAttribute {
            Param (
            [Parameter()]
            [System.Management.Automation.PSCredential]
            [System.Management.Automation.Credential()]
            $Credential
            )
            $Credential.UserName
            }
            Test-CredentialAttribute -Credential 'usernameAsString'
            ```

            ```batchfile
            powershell -noninteractive -file "c:\somewhere\Demo.ps1"
            ```

            Expected behavior
            -----------------

            Error:
            ```none
            Test-CredentialAttribute : Windows PowerShell is in NonInteractive mode. Read and Prompt functionality is not available.
            ```

            Actual behavior
            ---------------

            Prompts user for credentials (i.e. the same behaviour we'd expect had the command been run in interactive mode.

            Environment data
            ----------------

            ```powershell
            > (Get-WmiObject -class Win32_OperatingSystem).Version
            6.1.7601
            ```

            ```powershell
            > $PSVersionTable
            Name Value
            ---- -----
            PSVersion 5.1.14409.1012
            PSEdition Desktop
            PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
            BuildVersion 10.0.14409.1012
            CLRVersion 4.0.30319.42000 …

            1 vote
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              0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
            • [Suggestion] Include Universal Dashboard features

              How about include in PowerShell Engine, the excellent features of Universal Dashboard by Adam Driscoll ?

              - Design of web dashboard using Powershell cmdlets
              - REST API exposure using Powershell cmdlets

              https://www.powershellgallery.com/packages/UniversalDashboard/
              https://poshtools.com/powershell-universal-dashboard/

              1 vote
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                0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
              • copy-item progress

                Add an optional switch to show the progress of an ongoing copy operation. Could be useful for large operation. Basically replicate as much information as the Explorer does, without the performance graph.

                3 votes
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                  0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                • Mandatory parameters value is not accessible in DynamicParam block if the value to the parameter is given when prompted.

                  Parameter value from param block is not available in DynamicParam block if not passed while calling the function/Script. Here if I set the parameter in param block as it as mandatory the script/function will prompt for the input and the input given is not available in DynamicParam block.

                  https://social.technet.microsoft.com/Forums/en-US/637bcff2-ab98-4ead-a036-38e7eb94a261/dynamicparams-with-mandatory-parameters?forum=winserverpowershell

                  2 votes
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                    0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                  • join-object

                    Hello,

                    Would it be possible to natively have the Join-Object command as explained on the following MSDN blog: https://blogs.msdn.microsoft.com/powershell/2012/07/13/join-object/

                    Being able to cross data so easily (especially with left join) would really be a plus I think.

                    thank you

                    1 vote
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                      0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                    • Define which as one of standard aliases of Get-Command

                      Users of Unix-like OSs(e.g. macOS & Linux) use the command `which` to know where the executable of a command is.

                      ```
                      $ which code
                      /usr/bin/code
                      ```

                      On the other hand, users of PowerShell uses the commandlet `Get-Command` or the alias `gcm`.

                      ```
                      PS C:\> (gcm code).Path
                      C:\Program Files\Microsoft VS Code\bin\code.cmd
                      ```

                      However, the users of Unix-like OSs have to learn `gcm` if they have to use PowerShell and want to know the place of a command, though they don't if they would like to, for example, change directories and show the contents of files because PowerShell defines the same aliases…

                      2 votes
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                        0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                      • Bug: Slow function when setting a parameter to Mandatory and specifying its Type

                        There is a bug that causes a function to be called much more slowly than it should if an array parameter has both Mandatory and Type specified. I'm guessing something is causing the system to iterate through the array, so the larger the array, the longer to call the function.

                        With both Mandatory and Type specified, it takes a whole second to call a function with a 10MB byte array. If a 1byte array is used, it takes less than a millisecond to call the function. If only one, the other, or neither are specified, then it takes less than…

                        3 votes
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                          0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                        • Add ExportTo-Markdown

                          Hi

                          Using Markdown is common nowadays in VCS tools like Git for readme files.

                          Plus it's handy to get a tabular strcture for better visibility.

                          Example use cases:
                          - Get-Process output comparison at different dates and time
                          - SQL query results in tabular form with column names as headers

                          So it'd be someInput|ExportTo-MarkDown

                          1 vote
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                            0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                          • Move-Item's -Verbose causes $ErrorActionPreference to be ignored

                            Move-Items's -Verbose parameter causes the global $ErrorActionPreference = "Stop" to be ignored. This is a bug. Here's a repro script:

                            BugRepro.ps1:

                            $ErrorActionPreference = "Stop"
                            Write-Host "ErrorActionPreference is $ErrorActionPreference"
                            mkdir folder -ErrorAction SilentlyContinue | Out-Null
                            "" > a.txt
                            Copy-Item a.txt folder
                            Write-Host "About to trigger error"
                            Move-Item a.txt folder -Verbose | Out-Null
                            Write-Host "If you're reading this, then execution didn't stop!"
                            Write-Host "Remove the Verbose paramter and it does stop, like it should."

                            2 votes
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                              1 comment  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                            • Order of output not intuitive/ not sequential

                              Example Code:
                              $proc = Get-Process | Select-Object -Property ProcessName

                              $proc[5]

                              "A"
                              "B"
                              Write-Host "$proc[5]"

                              The output of Write-Host precedes the output of the strings beforehand. This is a non-sequential behaviour.

                              1 vote
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                                1 comment  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                              • Convert ToBase64 causes excessive memory usage

                                Converting most files (200 KB+) causes large memory usage. For instance, a 611 KB photo (one found in /Web/Wallpaper/Theme1) takes up 1 GB of RAM in PS.

                                [convert]::ToBase64String((get-content $path -encoding byte))

                                1 vote
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                                  0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                                • [Bug] Command line parsing: spaces and \"

                                  This is my powershell version
                                  ==========
                                  $PSVersionTable
                                  Name Value
                                  ---- -----
                                  PSVersion 5.1.15063.674
                                  PSEdition Desktop
                                  PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
                                  BuildVersion 10.0.15063.674
                                  CLRVersion 4.0.30319.42000
                                  WSManStackVersion 3.0
                                  PSRemotingProtocolVersion 2.3
                                  SerializationVersion 1.1.0.1
                                  =====END=====

                                  Let's see a use scene
                                  ========== WindowsPowershell
                                  function FormatReg([string]$value)
                                  {
                                  $value = $value -replace '"', '\"'
                                  $value = '"' + $value + '"'
                                  return $value
                                  }
                                  $temp = FormatReg '"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "-Command" "if((Get-ExecutionPolicy) -ne ''AllSigned'') { Set-ExecutionPolicy -Scope Process Bypass }; & ''%1''"'
                                  reg.exe add HKEY_CLASSES_ROOT\Microsoft.PowerShellScript.1\Shell\0\Command /f /d $temp
                                  =====END=====
                                  > Error: Invalid syntax.
                                  > Type register Add/? "Learn about usage information.

                                  ========== cmd
                                  reg.exe add HKEY_CLASSES_ROOT\Microsoft.PowerShellScript.1\Shell\0\Command /f /d "\"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe\"…

                                  2 votes
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                                    1 comment  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                                  • PowerShell Crash Get-NetFirewallProfile when run as service

                                    PowerShell crashes when running "Get-NetFirewallProfile | Select-Object LogFileName" by a windows service. In my case it was check_mk through a monitoring plugin.

                                    1 vote
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                                      0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                                    • Attempting to perform the InitializeDefaultDrives operation on the 'FileSystem' provider failed

                                      We are experiencing about 12 minutes wait time to start Powershell session because of disconnected network drive that didn't get clean up properly. It would be helpful for PowerShell to support ignoring drive or allow for timeout setting so we don't have to wait that long.

                                      C:\Users\keatchan>time /t & powershell get-date
                                      09:07 PM
                                      Attempting to perform the InitializeDefaultDrives operation on the 'FileSystem' provider failed.

                                      Wednesday, October 18, 2017 9:19:05 PM

                                      1 vote
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                                        0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                                      • using module <Module> does not work as expected

                                        I have a problem with loading classes from a module.

                                        Script is just two lines as following:
                                        using module AzureAD
                                        class TestClass { [Microsoft.Open.AzureAD.Model.Application] static DoIt() { return $null; } }

                                        If I run this, using .\Script.ps1 I get the following error:
                                        At C:\path\Script.ps1:3 char:20
                                        + class TestClass { [Microsoft.Open.AzureAD.Model.Application] static D ...
                                        + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                        Unable to find type [Microsoft.Open.AzureAD.Model.Application].
                                        + CategoryInfo : ParserError: (:) [], ParseException
                                        + FullyQualifiedErrorId : TypeNotFound

                                        However, if I run "using module AzureAD" from the command line first and then run the script, it works fine...

                                        What is the difference in running using module from…

                                        1 vote
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                                          0 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
                                        • very inconsistent drive letter usage

                                          Hi there

                                          in this case I have to remove and reinstall an OS while booting from usb stick. But this is only one example - it´s not the first time im seeing this behaviour.

                                          if (Test-path c:) {Get-Volume -DriveLetter c | Get-Partition | Remove-PartitionAccessPath -AccessPath c:\}

                                          In this line the term C is used three times

                                          First time as c: (here would be c:\ also possible)
                                          Second time as c (neither c: nor c:\ is working here)
                                          Third time as c:\ (neither c nor c: is working here)

                                          I´m working with variables - this means I have to create 3…

                                          3 votes
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                                            3 comments  ·  PowerShell Engine  ·  Flag idea as inappropriate…  ·  Admin →
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