Getting "The server could not be contacted." when trying to access active directory
18,009
Solution 1
In your case just change your srvr
to:
srvr = "DCESTAGIO"
Solution 2
The problem is how the "Principal Context" is written... it should be:
PrincipalContext thisPrincipalContext = new PrincipalContext(ContextType.Domain, "DCESTAGIO");
in this case.
If you look at the documentation for the PrincipalContext
constructors, it should be quite clear:
public PrincipalContext(ContextType contextType, string name)
or
public PrincipalContext(ContextType contextType, string name, string container)
So you basically need:
- your context type (here:
ContextType.Domain
) - the domain name (try just the "Netbios" name, e.g. "YOURDOMAIN" - or leave NULL for "default" domain)
- optionally a container (as an LDAP path - a "distinguished" name,
full path but without any
LDAP://
prefix)
as seen in this answer.
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Comments
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Vítor Martins about 2 years
I'm trying this code:
public bool isTravelAdmin(string srvr, string usr, string password) { System.Diagnostics.Debug.WriteLine("I'm in isTravelAdmin!"); PrincipalContext domainctx = new PrincipalContext(ContextType.Domain, srvr); UserPrincipal userPrincipal = UserPrincipal.FindByIdentity(domainctx, IdentityType.SamAccountName, usr); bool isMember = userPrincipal.IsMemberOf(domainctx, IdentityType.Name, "traveladmin"); if (isMember) { System.Diagnostics.Debug.WriteLine("This user is INDEED a member of that group"); return true; } else { System.Diagnostics.Debug.WriteLine("This user is *NOT* member of that group"); return false; } }
Which is supposed to check if a user belongs to a certain group ("traveladmin"), but I'm getting
System.DirectoryServices.AccountManagement.PrincipalServerDownException
Any idea why and how to solve? by the way:
srvr = "LDAP://192.168.56.101/CN=Users,DC=estagioit,DC=local"
PS: I'm using the same srvr on another method and it's working and connecting.
PSS: If this is not the best way to go about this I'm open to suggestions.
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Somebody over 7 years
this
answer is a blank link -
Cee McSharpface over 5 yearshow would you know that FQDN "DC=estagioit,DC=local" translates to pre-Windows 2000 domain name "DCESTAGIO"? is there a fixed rule to translate such names or was that information included in a comment that is now deleted? like this, it is difficult to replicate this QA in similar situations.
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IbraHim M. Nada over 2 yearsCOULD U EXPLAIN THAT ?