I am trying to start a service on a remote computer using the following command on the cmdlet:
(Get-WmiObject -computer atl-fs-01 Win32_Service -Filter "Name='Alerter'").InvokeMethod("StartService",$null)
When I run the command I get the error Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)). After some research it appears I need to set my username and password, but I cannot find anything that allows me to set these prior to accessing the remote computer. I also plan on making a script for this so I don't have to type out everything on the command line. PowerShell code for setting user and password would be helpful as well. Thanks.
You need to pass in the credential object (created with Get-Credential) using the "-Credential" switch.
See this MSDN article for more information and an example.
Chapter 13 (page 502) of Bruce Payette's (UTTERLY AWESOME) "Windows Powershell in Action, Second Edition" comprehensively covers configuration of remote Powershell admin. If you've not already asked Santa for a copy of this wonderful book, DO SO NOW! :)
In case you are in a hurry:
MSDN (and other sources) have some good documentation on how to
Enable remoting to a remote server
Connect from your local server to your remote server & execute commands
HTH.
Related
I have to query my Active Directory from another windows server using PowerShell through LDAP. I got LDAP connection details, port number, login credential. However, after googling for hours I couldnt find a soultion to connect PowerShell to LDAP. I tried below cmdlet but all returned the error "the term ** is not recognised as the the name of a cmdlet".
New-AdfsLdapServerConnection
Test-LDAPConnection
Can someone please help. I want to connect to my LDAP and run a simple command like
Get-ADGroup -Filter 'Name -like "Sec-abc-xyz-123-U"'
later I want to write my full Powershell script and then use Task scheduler to automate my powershell script. Can someone please let me know how I could connect to LDAP?
As #Santiago Squarzon suggested, you need to install RSAT to use the AD PS Module
I am attempting to automate the Skype for Business Server installation process in Powershell, I have a script that remotes into specified machines and begins preparing them as Front-End servers. The problem lies when certain SfB cmdlets (SfB commands are all of the form "verb-Cs...", ex. Get-CsUser or Get-CsPool) are run in remote sessions, they throw the double-hop error:
Exception: Active Directory error "-2147016672" occurred while searching for domain controllers in domain...
This is after running Enable-CsComputer, which enables the computer's role-based off its definition in the topology (topology was published successfully). The user object is in all required groups (RTCUniversalServerAdmins, Schema Admins, CsAdministrators & Local Admin rights on all SfB Servers). Oddly enough, the command 'Import-CsConfiguration -localstore" does not throw errors, and it's in the same remote session. There may be other local or domain groups that I need to be in, but I cannot pinpoint exactly which and have not seen them documented in the Skype build guides. Skype commands that have parameters to specify targets or just pull data, such as Get-CsPool or Get-CsAdForest, do not have errors because they are run in the local scope. The Enable-CsComputer has no parameter for the computer name, it has to be executed from that machine itself.
Enabling CredSSP delegation on each server is not an option, and I'm not understanding why there is a "second hop" in this command! If the second hop was a resource on a file server or database, that would make sense, and be easy to solve, but in this case, I can't track it. Can anyone tell me what I may be missing?
Here's a code sample to try and illustrate. From the jumbox I get the pool data to create an array, and a session is opened to each machine:
$ServerArray =get-cspool -identity $poolName
$i=0
$SessionArray = #{}
foreach($server in $ServerArray.Computers){$SessionArray[$i] = new-PsSession -ComputerName $server}
foreach($session in $SessionArray.values){
invoke-Command -session $session -scriptBlock {
#remote commands:
import-csConfiguration -<config file path> -localstore; #no errors
enable-CsReplica; #no errors
enable-cscomputer; #double hop error here
}}
If I log into that machine and run the same command, it executes fine but the intention of the project is to automate it on an arbitrary number of machines.
It looks like it's just trying to authenticate to a domain controller, which is reasonable. You'll have to approach this like any other double-hop issue.
Microsoft has an article dedicated to the double hop issue, and has a few solutions other than CredSSP that you can look at: Making the second hop in PowerShell Remoting
I want to build a script to change and/or set up BIOS password to HP workstations.
Script i run as follows:
C:\> $computers=Get-Content -Path c:\computers.txt
C:\> foreach ($computer in $computers) {
$passChange=Get-WmiObject -computername $computer -Namespace root/hp/instrumentedBIOS -Class HP_BIOSSettingInterface
$passChange.SetBIOSSetting('Setup Password','<utf-16/>MYNEWPASSWORD','<utf-16/>')
}
Now, the following happen:
If my BIOS has no password, the script works just fine!
If my BIOS has password already, script has Return: 6. I suppose there is
a different option for changing the BIOS password?If yes, any help
is appreciated!
If i run the script for my computer, it works.
If i run the script for another computer i get the following error:
The RPC server is unavailable. (Exception from HRESULT: 0x800706BA).
Is there a way to enable an option to enable the RPC for this feature and then disable it again?
Thank you in advance
According to HP's documentation HP Client Management Interface the WMI interface supports remote interfacing.
You need to ensure all remote computers you're attempting to connect to have the HP custom WMI Namespace.
You also need to ensure the account you're running under has administrative permissions on all of the remote computers.
You may also need to explicitly set the impersonation to 3 which is impersonate.
For more information: Connecting to WMI Remotely with PowerShell
Also ensure the firewall on the remote computers is either off or has exclusions for WMI
I've a commandline program (c#) that encrypts config files based on machine key.
A powershell script copies the build to a Target Server, modifies configs accordingly and installs windows services.
All the windows services run as local system account (standard user, non-admin) - let's call this account "locuser".
The Target Server is a Win 2012 R2 Server. All of the above is achieved by PS remoting from the Build Server to this Target server.
Now, I need to run the encrypt commandline program as "locuser", so that the program can use the account specific key to do the encryption.
I know that this can be easily achieved by calling Start-Process cmdlet with -Credentials parameter. Well, here's the catch, the above works fine, if I remote in (RDP) to the Target Server and then run the Start-Process .... -Credential $cred from a Powershell Console.
However, I need this to be working while I remote-in (using my scripts) to the TargetServer whilst deploying. When I remote-in to the TargetServer I use credentials that has Admin privileges.
I've tried the following
I've granted "locuser" both "Full Control" and "Invoke (Execute)" permissions by using the Set-PSSessionConfiguration -Name Microsoft.PowerShell -ShowSecurityDescriptorUI command. I've run this command for both Microsoft.Powershell and Microsoft.Powershell32 - Still get Access Denied
I've edited the "Local Security Policy"->"Local Policies"->"User Rights Assignment"->Impersonate a client after authentication - and added both the Admin account (that I login with) and the "locuser" account - Still get Access Denied
I've also granted locuser admin rights - Still get Access Denied
I'm pretty sure, there is some configuration on the PS Remoting Side of things that I'm missing out but can't figure out what - because all Powershell throws me is a Access Denied error (see screenshot) with little to no useful information to troubleshoot further.
Also, checked Event logs for any traces but to no avail.
You've fallen prey to the dreaded Double Hop. Basically you're authenticating from computer A to computer B, then trying to authenticate again from computer B to computer C (which also happens to be B in this case).
If at all possible, you would be better off ending the session and starting a new one with the locuser credentials, then just calling Start-Process. Another, more messy approach is to use schtasks.
I can tell you how to do it in the same session but it's a bit messy and very complicated, and should only be a last resort:
On the originating server (Build Server):
Run the command Enable-WSManCredSSP -Role Client -Delegate [name] where [name] is an IP or DNS address / range including any target servers (eg "192.168.1.*")
Open GPEdit.msc, navigate to Computer Configuration\Administrative Templates\System\Credentials Delegation and check that the rules Allow delegating fresh credentials and Allow delegating fresh credentials with NTLM... are enabled and include [name]
On the Target Server:
Run the command Enable-WSManCredSSP -Role Server
Running the command:
Invoke-Command [targetserver] [-Credential $cred] -Scriptblock {
## do stuff
Invoke-Command . -Credential $locusercred -Authentication Credssp -ScriptBlock {
Start-Process -FilePath $sc #etc
}
}
Some things to be aware of:
Firstly I used this setup to create a local session, then remote from there (so A-A-B instead of A-B-B) so the Group Policy stuff might be in the wrong place but pretty sure it's right.
Secondly I found that credentials are a pain to get working in sessions (in this case $locusercred). I did get it going natively but weirdly it suddenly couldn't decrypt the securestring. I ended up saving a securestring with a defined key to the registry so it can always be decrypted from any account, you may need to come up with your own solution there.
All this stuff is explained in the free eBook "The Secrets of PowerShell Remoting", if you go for the double-hop approach I recommend giving it a read.
I have Powershell script that makes backups of all Event logs on current localhost.
It runs from Task Scheduler with "Run with highest privileges" under restricted account (this account only has Backup Operator rights). Script itself can be found here
OS: Windows Server 2008 R2, UAC is turned off.
The problem appears in the following line:
$Eventlogs = Get-WmiObject -Class Win32_NTEventLogFile -ComputerName $computer
In returned collection of Event logs Security log is missing and as result isn`t backuped. All other are present.
If the same script is run directly from Powershell using the same account - Security log is present.
Granting local Admin rights to account solves the issue but isn`t applicable.
Do you have any ideas what may be causing such behaviour? Appreciate any help!
I have not done a lot of research on this but I once encountered a similar problem. Using the switch -EnableAllPrivileges in the first call of get-WmiObject solved it for me.