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unable to get installed software details of vm machine of azure using System.Management

My requirement is to get installed software details of vm machine of azure and store the details in db. but when I try to get the details using System.Management class I am getting the below error
System.Runtime.InteropServices.COMException: 'The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)'
below is my sample code I am using to get the software details
string SoftwareQuery = "SELECT * FROM Win32_Product";
ConnectionOptions connection = new ConnectionOptions();
connection.Username = "bla bla";
connection.Password = "Password";
connection.EnablePrivileges = true;
connection.Impersonation = ImpersonationLevel.Impersonate;
ManagementScope managementScope = new ManagementScope(#"\\xxxx.xxxx.cloudapp.azure.com:3389\root\CIMV2", connection);
managementScope.Path = ManagementPath.DefaultPath;
managementScope.Connect();
ObjectQuery queryObj = new ObjectQuery(SoftwareQuery);
ManagementObjectSearcher searcher = new ManagementObjectSearcher(managementScope, queryObj);
foreach (ManagementBaseObject managementObj in searcher.Get())
{
//get the software list here
}
Note: The above code is working on intranet properly
Please let me know anyone have solution on this.

It might be related to the Windows Management Instrumentation service being in a stopped state. Take a look at Starting and Stopping the WMI Service.
Hope it helps!

Access denied for .Net GetProcesses

I'm having trouble connecting to remote computer to grab a list of processes running.
For my test machine I'm using the username #"ownme\veritas". The password is just "veritas".
The sample domain is "ownme".
return new System.Management.ConnectionOptions()
{
//certainly these variables have been checked and are correct
Username = UserCredential.DomainUser,
Password = UserCredential.Password
};
This is where I'm trying to do the connection. I don't know, but this might actually be the issue here. It could also be I didn't fill out enough fields in the ConnectionOptions above.
I referred to these two articles:
https://www.experts-exchange.com/questions/23514935/How-to-use-GetProcess-for-remote-sytems.html
https://msdn.microsoft.com/en-us/library/system.management.connectionoptions.authentication.aspx
I can't figure out what I'm doing wrong
ManagementScope scope = new ManagementScope($"\\\\{computer.DnsHostname}\\root\\cimv2", connectionOptions);
scope.Connect();
//Error: Access is denied
var processes = System.Diagnostics.Process.GetProcesses(dnsHostName);

GetProcesses will use the current users credentials to connect to the remote machine, not the credentials you specified via ConnectionOptions.
You need to use the WMI scope object that you created with the correct credentials to issue a query for the processes like this:
//..
SelectQuery query = new SelectQuery("select * from Win32_Process"); //query processes
using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query))
{
using (ManagementObjectCollection collection = searcher.Get())
{
foreach (var process in collection) //loop through results
{
var name = process["name"]; //process name
//Do something with process
}
}
}

I didn't realize this was such a highly viewed question: I found the answer a long time ago. I actually didn't use WMI to do it. We actually filed a ticket with Microsoft and the discounted us for free after they gave us the answer. The answer is:
LogonUser + NEW_CREDENTIALS

WMI management scope connect to local instead of remote

I tried to connect to a remote PC and query for its processes but when I run the code, it got connected with my local PC and obtained its processes instead of the remote PC.
The code is
ManagementScope scope = new ManagementScope(#"\\remote-user\\root\\cimv2");
scope.Connect();
ObjectQuery query = new ObjectQuery("SELECT * FROM Win32_Process");
ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query);
ManagementObjectCollection queryCollection = searcher.Get();
foreach (ManagementObject m in queryCollection)

You appear to be passing a username ("remote-user") instead of a hostname of the remote machine to your management scope. Change your code to e.g.:
ConnectionOptions options = new ConnectionOptions();
options.Password = "remoteUserPassword"; // you may want to avoid plain text password and use SecurePassword property instead
options.Username = "remote-user";
ManagementScope scope = new ManagementScope(#"\\remoteMachineHostname\root\cimv2", options);

(I assume that remote-user is Full computer name) change:
ManagementScope scope = new ManagementScope(#"\\remote-user\\root\\cimv2");
to:
ManagementScope scope = new ManagementScope(#"\\<FullComputerName>\root\cimv2");
another option:
ManagementScope scope = new ManagementScope("\\\\<FullComputerName>\\root\\cimv2");
See this link (it's Microsoft example)
Edit
if you want to connect with deffrent user you need to pass ConnectionOptions (see above link)

Add a machine to an AD domain remotely via WMI using C#

I am trying to use C# to add a machine to an AD domain using WMI and I am having problems, the thing is if I comment out username and password parameters it works fine, but it adds the system to a workgroup instead of a domain, when I try to set the username and password it throws an "Attempted to access an unloaded AppDomain" exception. here's my code:
ManagementClass networkTask = new ManagementClass(connectionScope,
new ManagementPath("Win32_ComputerSystem"), new ObjectGetOptions());
ManagementObjectCollection moc = networkTask.GetInstances();
foreach (ManagementObject mo in moc)
{
ManagementBaseObject newDomain = mo.GetMethodParameters("JoinDomainOrWorkgroup");
newDomain["Name"] = domainName;
newDomain["Password"] = password;
newDomain["UserName"] = username;
newDomain["FJoinOptions"] = 3;
ManagementBaseObject rename = mo.InvokeMethod("JoinDomainOrWorkgroup", newDomain, null);
return 0;
}
I am connecting to the system using local administrator credentials

WMI: “File not found” when trying to retrieve “ServerNetworkProtocol” scope for SQL Server

I am trying to get Server Network Protocol (SQL Server) using WMI.
I had written small application:
---------------------------C# code--------------------------
ManagementScope scope = new ManagementScope(#"\\computerName\root\Microsoft\SqlServer\ComputerManagement");
scope.Options.Username = "Administrator";
scope.Options.Password = "Password";
scope.Connect();
var query = new ObjectQuery(#"SELECT * FROM ServerNetworkProtocol");
var searcher = new ManagementObjectSearcher(scope, query);
var managementObjectCollection = searcher.Get();
var result = managementObjectCollection.Cast<ManagementObject>().ToList(); //<---- FileNotFoundException
var s = result.First()["ProtocolName"].ToString();
MessageBox.Show(String.Format("Protocol name: {0}", s));
And when I run the application, I will receive System.IO.FileNotFoundException.
I tested the query using WBEMTest Utility and everything is okey (with Administrator credentials).
Later I had written test service and put the same code, and service works correctly without any exceptions.
I suppose the problem related with credentials.
Can anyone explain more detailed what's wrong. What permissions need to run this query (if problem with credentials) and how I can resolve the issue.
I will be appreciated for any help.

just check credential and change one line :
ManagementScope scope = new ManagementScope(#"\\computerName\root\Microsoft\SqlServer\ComputerManagement10");