Process.Start not working using a local account

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Hi experts,
I'm using the following code to start a process. It works perfect for a domain user, but it does not work for a local user.

C#

using (SecureString password = new SecureString())
{
    string path = @"c:\temp\test\mytest.exe";

    foreach (char c in "test@mycomputer")
        password.AppendChar(c);
    string uname = "test";
    string domain = Environment.MachineName;
    Process.Start(path, uname, password, domain);
}

The error message is: Invalid Directory.
[EDIT]
This happens if I'm loged in as domain user and try to do the above...but runas /user:test c:\temp\test\mytest.exe works.
[/EDIT]

Any idea?

Thank you in advance.
Bruno

Posted 5-Nov-14 2:16am

User 11060979

Updated 5-Nov-14 2:44am

v3

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KaushalJB 5-Nov-14 8:23am

Does your local user have permission in worker process ?

[no name] 5-Nov-14 8:35am

Yes it has. I updated the question with a maybe important circumstance.

KaushalJB 5-Nov-14 9:08am

As per your chat... its for sure the local user needs Full Control to the Drive itself and subpath too.

ZurdoDev 5-Nov-14 8:31am

Either the directory does not exist where the code is running or the permissions are not enough.

[no name] 5-Nov-14 8:35am

I updated the question with a maybe important circumstance.

ZurdoDev 5-Nov-14 8:37am

The only 2 reasons I've ever seen that error are the 2 I listed.

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Sinisa Hajnal · Accepted Answer · 2014-11-05T02:29:00

Solution 1

Most probably access rights. Ensure that your local user can read the directory and its content.

Posted 5-Nov-14 2:29am

Sinisa Hajnal

Comments

[no name] 5-Nov-14 17:07pm

Thanks for answering. No it is not a pb of Access rights.

Richard Deeming · Accepted Answer · 2014-11-05T02:38:00

Solution 2

Try passing an empty string as the domain parameter:

C#

Process.Start(path, uname, password, string.Empty);

The documentation[^] isn't entirely clear, but it does say the the domain is the "Active Directory domain to use when starting the process". Your computer name isn't the name of an Active Directory domain.

Posted 5-Nov-14 2:38am

Richard Deeming

Comments

[no name] 5-Nov-14 8:40am

Thanks for replying. I allready tried with empty Domain, with "." with ".\" with "machinname" with "machinename\".

And thanks for the link...active dir I Need to check.

Alan N · Accepted Answer · 2014-11-05T04:22:00

I hesitate to post as a solution as this is only a guess. I think the difference between the command prompt "RunAs" and Process.Start is the handling of the user profile. RunAs loads the target user profile by default whereas the Process.Start does not. This probably means that the "Default User" profile will be loaded.

To test the hypothesis try RunAs with the /Noprofile switch or provide a ProcessStartInfo with LoadUserProfile = true for your Process.Start.

Alan.

Process.Start not working using a local account

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