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Thread: More "Tree or server cannot be found"-problems

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  1. #1
    Ronny Simonsen NNTP User

    More "Tree or server cannot be found"-problems

    Hi!
    After the last client w/Servicepack was pu in use, we experience allot of
    this problems that the user can't login. In most cases when this problem
    appeare, it happens after a ACU upgrade.
    The latest version we use is Client 4.91 SP1.

    This problemes was always solved when i uninstall the client and did a
    clean installation of the client.

    Today i got this problem with another computer running Win2000
    Proffesional. It had already an clean installation of C4.91SP1 and it was
    working for 2weaks without problems. Now the same problem with "no tree or
    server was found". I can browse the Tree, but i get an errormsg if i try
    to browse Context.

    I uninstalled the client and did again a new and clean installation
    without any luck. I then locked the settings for det NIC and then it
    suddenly start to work again.

    Is there some issues with hardware-settings on the NIC? The computer have
    a 3Com 905C Card and i locked it to 10Mbits/Half Duplex. After this it
    worked!

    --
    Best regard,
    Ronny Simonsen
    Narvik - Norway

    Using Opera M2, http://www.opera.com/

  2. #2
    Daniel Tran NNTP User

    Re: More "Tree or server cannot be found"-problems

    I've seen this and usually it's a misconfigured slp and port speed mismatch
    (especially with 3com card).

    Don't let the workstation do auto speed determination.

    Daniel
    "Ronny Simonsen" <ronny.simonsen@no_spamnfk.no> wrote in message
    news:op.sysgrtv2azysw0@ronnys.oscarsborg.vgs.no...
    Hi!
    After the last client w/Servicepack was pu in use, we experience allot of
    this problems that the user can't login. In most cases when this problem
    appeare, it happens after a ACU upgrade.
    The latest version we use is Client 4.91 SP1.

    This problemes was always solved when i uninstall the client and did a
    clean installation of the client.

    Today i got this problem with another computer running Win2000
    Proffesional. It had already an clean installation of C4.91SP1 and it was
    working for 2weaks without problems. Now the same problem with "no tree or
    server was found". I can browse the Tree, but i get an errormsg if i try
    to browse Context.

    I uninstalled the client and did again a new and clean installation
    without any luck. I then locked the settings for det NIC and then it
    suddenly start to work again.

    Is there some issues with hardware-settings on the NIC? The computer have
    a 3Com 905C Card and i locked it to 10Mbits/Half Duplex. After this it
    worked!

    --
    Best regard,
    Ronny Simonsen
    Narvik - Norway

    Using Opera M2, http://www.opera.com/



  3. #3
    Ronny Simonsen NNTP User

    Re: More "Tree or server cannot be found"-problems

    Hi!
    Today, the very same PC is showing the same problem...AGAIN!
    But! If the user is waiting some time and try to reenter password, then it
    suddenly work.
    No reboot, but try to reenter password after i while, then it suddenly
    work.

    How can i troubleshoot this? How can i check if SLP is working as it
    should do?
    I try to run SLP with Default scope, but is it better to configure a new
    scope?

    how do i trace the communication during such problems?

    I need some help!


    P Mon, 17 Oct 2005 21:44:01 +0200, skrev Daniel Tran <dtran@ssc.ucla.edu>:

    > I've seen this and usually it's a misconfigured slp and port speed
    > mismatch
    > (especially with 3com card).
    >
    > Don't let the workstation do auto speed determination.



    --
    Best regard,
    Ronny Simonsen
    Narvik - Norway

    Using Opera M2, http://www.opera.com/

  4. #4
    Tony Pedretti NNTP User

    Re: More "Tree or server cannot be found"-problems

    Ronny,

    Masking any info. you might consider a security hazard please post the
    results of SLPINFO /ALL run from the command-prompt on a Windows
    workstation.

    Assuming SLPDA is configured on one or two of NetWare your servers, does
    DISPLAY SLPDA run from the console on each NetWare server report that your
    other NetWare servers are resolving names from those running SLPDA?
    Does DISPLAY SLP SERVICES run from the console on each NetWare server report
    the same information?

    SLP is the default and preferred name/service resolver for NetWare 5.0 and
    above over IP. Its like combination of WINS and DNS the IETF first released
    in 1997. These TIDs will give you some additonal SLP background, the steps
    to configure a DA, and links to others for more detail...

    SLP Terms and Configuration Reference
    http://support.novell.com/cgi-bin/se...?/10014396.htm

    Configuring SLP with a SCOPED directory agent (DA)
    http://support.novell.com/cgi-bin/se...i?10059981.htm

    From the Windows side Ethereal is good, free way to go. Packetscan from
    the NetWare console.

    Guidelines to Take a Packet Trace
    http://support.novell.com/cgi-bin/se...?/10011012.htm

    How to use Ethereal to capture a packet trace.
    http://support.novell.com/cgi-bin/se...?/10070788.htm

    Packetscan - NetWare packet capture tool
    http://support.novell.com/cgi-bin/se...gi?2967287.htm

    --
    Tony Pedretti
    TransUnion Corporation



  5. #5
    Martin Stepanek NNTP User

    Re: More "Tree or server cannot be found"-problems

    I've seen this issue in a number of locations (client and ours) since 4.9. What I've found: Entering into the client properties dialog (right click the "N" in your systray) if you look in your tree list, there may be a "blank" entry above your tree. In my case on my laptop as I use it to manage client sites I have a number of trees in there at any given time. In all case lately that I've seen this, click on the blank entry and remove it. Reboot and bang, the tree is now visible. I had to actually delete all trees on my laptop one time to get this too work. Occasionally the client seems to re-insert that blank entry again.



    Martin Stepanek, CNE
    IMAGE-TECHNOLOGY
    Barrie, Ontario Canada
    http://www.image-technology.com

    >>> Tony Pedretti<ynotpe@NoSpaMhotmail.com> 18/10/2005 1:54:54 pm >>>


    Ronny,

    Masking any info. you might consider a security hazard please post the
    results of SLPINFO /ALL run from the command-prompt on a Windows
    workstation.

    Assuming SLPDA is configured on one or two of NetWare your servers, does
    DISPLAY SLPDA run from the console on each NetWare server report that your
    other NetWare servers are resolving names from those running SLPDA?
    Does DISPLAY SLP SERVICES run from the console on each NetWare server report
    the same information?

    SLP is the default and preferred name/service resolver for NetWare 5.0 and
    above over IP. Its like combination of WINS and DNS the IETF first released
    in 1997. These TIDs will give you some additonal SLP background, the steps
    to configure a DA, and links to others for more detail...

    SLP Terms and Configuration Reference
    http://support.novell.com/cgi-bin/se...?/10014396.htm

    Configuring SLP with a SCOPED directory agent (DA)
    http://support.novell.com/cgi-bin/se...i?10059981.htm

    From the Windows side Ethereal is good, free way to go. Packetscan from
    the NetWare console.

    Guidelines to Take a Packet Trace
    http://support.novell.com/cgi-bin/se...?/10011012.htm

    How to use Ethereal to capture a packet trace.
    http://support.novell.com/cgi-bin/se...?/10070788.htm

    Packetscan - NetWare packet capture tool
    http://support.novell.com/cgi-bin/se...gi?2967287.htm

    --
    Tony Pedretti
    TransUnion Corporation


  6. #6
    Martin Stepanek NNTP User

    adendum Re: More "Tree or server cannot be found"-problems

    The one thing I should have mentioned however, this doesn't seem to fix the goofy login issues mentioned in this post. I have seen these issues as well or similar. Reboot the pc after install/uninstall and if you log in to quickly, you get the password failure message (even though you know you've typed it correctly 20 times), leave it for ten minutes and bang it connects first time. Prior to sp1 you'd often get an error something like 0xffffffffffffff or some nutty thing, can recall exactly anymore but it was the same issue. Reboot 20 times or wait ten minutes then suddenly it connects.

    I have a properly configured scope and did the checks to ensure it is working correctly. I don't think scope is the issue but communication might be.

    Martin Stepanek, CNE
    IMAGE-TECHNOLOGY
    Barrie, Ontario Canada
    http://www.image-technology.com

    >>> Martin Stepanek<Martin.REMOVE@DELETE.image-technology.com> 19/10/2005 4:52:36 pm >>>


    I've seen this issue in a number of locations (client and ours) since 4.9. What I've found: Entering into the client properties dialog (right click the "N" in your systray) if you look in your tree list, there may be a "blank" entry above your tree. In my case on my laptop as I use it to manage client sites I have a number of trees in there at any given time. In all case lately that I've seen this, click on the blank entry and remove it. Reboot and bang, the tree is now visible. I had to actually delete all trees on my laptop one time to get this too work. Occasionally the client seems to re-insert that blank entry again.



    Martin Stepanek, CNE
    IMAGE-TECHNOLOGY
    Barrie, Ontario Canada
    http://www.image-technology.com

    >>> Tony Pedretti<ynotpe@NoSpaMhotmail.com> 18/10/2005 1:54:54 pm >>>


    Ronny,

    Masking any info. you might consider a security hazard please post the
    results of SLPINFO /ALL run from the command-prompt on a Windows
    workstation.

    Assuming SLPDA is configured on one or two of NetWare your servers, does
    DISPLAY SLPDA run from the console on each NetWare server report that your
    other NetWare servers are resolving names from those running SLPDA?
    Does DISPLAY SLP SERVICES run from the console on each NetWare server report
    the same information?

    SLP is the default and preferred name/service resolver for NetWare 5.0 and
    above over IP. Its like combination of WINS and DNS the IETF first released
    in 1997. These TIDs will give you some additonal SLP background, the steps
    to configure a DA, and links to others for more detail...

    SLP Terms and Configuration Reference
    http://support.novell.com/cgi-bin/se...?/10014396.htm

    Configuring SLP with a SCOPED directory agent (DA)
    http://support.novell.com/cgi-bin/se...i?10059981.htm

    From the Windows side Ethereal is good, free way to go. Packetscan from
    the NetWare console.

    Guidelines to Take a Packet Trace
    http://support.novell.com/cgi-bin/se...?/10011012.htm

    How to use Ethereal to capture a packet trace.
    http://support.novell.com/cgi-bin/se...?/10070788.htm

    Packetscan - NetWare packet capture tool
    http://support.novell.com/cgi-bin/se...gi?2967287.htm

    --
    Tony Pedretti
    TransUnion Corporation


  7. #7
    Tony Pedretti NNTP User

    Re: More "Tree or server cannot be found"-problems

    Martin,

    We have quite a few workstations including my own connecting to multiple
    trees, but I can't recall encountering that particular issue.
    Client profiles have been an issue with some people in the past so I'm
    curious if this continues to happen with 4.91 SP1.

    Lets gather some more details about your environment...

    Any additional components of the client installed?

    Windows Event logs showing anything unusual?
    Was Windows installed from scratch, a custom image, or an OEM image?

    Service or any other driver-based software like firewall, VPN, remote
    management, antivirus, etc. installed and running?

    Can you give us any details about the make/model of hardware, NIC and its
    drivers, etc. of said workstation?

    --
    Tony Pedretti
    TransUnion Corporation



  8. #8
    Martin Stepanek NNTP User

    Re: More "Tree or server cannot be found"-problems

    Wow, this'll be a brain racker.

    Off the top, there have been 3 environments that I can think of, however said all environments to a degree are similar. Our own, and two customers in particular. The one customer is simple because every workstation they have is a Dell dimension...hmm model. I can find out and post back but its less than a year old.

    Here are the similarities. All networks are SBS6.5 sp3 and sp4. The client issues started at 4.9 and at our location have continued thru 4.9sp1. There are actually two issues I think. Related? I don't know. Seem to be sporatic in that a workstation seemling is fine for days, weeks ... then suddenly either a tree not found or the authentication failure.

    First issue was as mentioned by the poster above. When logging in you'd get the message tree could not be found. When you click advanced on the client and search for the tree it would come up blank. However sometimes if you click the context button, even though you couldn't find the tree the context would show up. You can log in via IP address but not by tree. Recalling a similar issue from way way back, I decided to check the client properties and that is where I noticed a "blank" space at the top of the tree list in client properties. If deleted, rebooted, then login and tree detect successful. Seen this at three locations as mentioned and three different sets of hardware. Dell, ASUS and Giga-byte. In all locations there was no MS client loaded and no MS file sharing service. Just Tcpip and Novell Client for windows. Static scope configured in all locations and working. If logged in to workstation only dhcp services seemed to be working just fine.

    Second issue. On log in would get an error such as (client 4.9) 0Effffffffff or something to that effect. I cannot remember exactly what it was or the typical authentication error you'd get if you typed your password incorrectly. However I know the latter not to be the issue because you could type it again and again to no avail reboot (sometime had to reboot twice or three times) then boom it logs in lickety split. Its almost as if the connection isn't clearing or accepting reconnection? After updating to SP1 the issue still exists but only as the authentication error. It does not give that previously mentioned error code. Don't quote that code because I'm likely off base there, I just remember it being a long set of hex numbers. On occasion when this authentication error occurs, without even retyping the password, if I just click the ok button again or clicking after a long wait (five or more minutes) suddenly it logs in. A note to this, since updating SBS to sp4 the same issue is happening with ifolder client. If I log off of ifolder, and try to log into it again, often I get an authentication error, once this happens I cannot log into it again (even if remember password is on). The only way to clear it is reboot my machine and log in again. Often on start up the authentication issue happens with ifolder but subsequent attempts will suddenly connect. Seems like a "timing" issue of some sort. I think when other programs are loading and perhaps utilizing network resources ifolder quickly times out so could be a different issue, but doesn't explain why when you log off of it ,it won't log in again with a complete PC reboot.

    I haven't done sp4a yet which I hope to do this weekend.

    Client compenents: All location did the custom install with ndps option checked. One location has the ZFD4.x client installed. Two PC's at our location have the issue, both are installed from scratch. Dell client was installed by Dell, then client added their CAD package, GW and Novell Client.


    Not sure on event log errors. Nothing out of the ordinary that I've noticed at least checking through mine.




    >>> Tony Pedretti<ynotpe@NoSpaMhotmail.com> 20/10/2005 9:50:40 am >>>


    Martin,

    We have quite a few workstations including my own connecting to multiple
    trees, but I can't recall encountering that particular issue.
    Client profiles have been an issue with some people in the past so I'm
    curious if this continues to happen with 4.91 SP1.

    Lets gather some more details about your environment...

    Any additional components of the client installed?

    Windows Event logs showing anything unusual?
    Was Windows installed from scratch, a custom image, or an OEM image?

    Service or any other driver-based software like firewall, VPN, remote
    management, antivirus, etc. installed and running?

    Can you give us any details about the make/model of hardware, NIC and its
    drivers, etc. of said workstation?

    --
    Tony Pedretti
    TransUnion Corporation


  9. #9
    Tony Pedretti NNTP User

    Re: More "Tree or server cannot be found"-problems

    A five or more minute wait for a successful login suggests entries are being
    made to one of the Bad caches as that is their default timeout.
    The one consistent "Tree or server not found" error we saw recently (likely
    caused by third-party network services) was on a new laptop with both wired
    and wireless NICs and said services/utilities enabled. We found reducing
    the Bad Address Cache Timeout to anything below 250 was reliable (we went
    with 200 to be consistent and to compensate for slower boxes).

    What affect does reducing or disabling the Bad Address Cache Timeout on the
    Advanced Settings tab in client's properties have?...

    How does the Bad Address Cache work?
    http://support.novell.com/cgi-bin/se...?/10093267.htm

    Using the IP address or otherwise a default/preferred server is a reliable
    work around for an issue with service/name resolution but it shouldn't be
    seen as a permanent solution.

    For your second issue, please post the exact error message with the current
    client (4.91 SP1).

    You might also want to have a look at having the proper firewall ports open
    and some of SLP troubleshooting steps I posted earlier in this thread...

    Server or Tree not found after applying Windows XP sp2
    http://support.novell.com/cgi-bin/se...i?10095407.htm

    "Tree or server not found" error on bootup and immediate login
    http://support.novell.com/cgi-bin/se...?/10086186.htm

    NetWare Client registry settings to control the behavior of SLP
    http://support.novell.com/cgi-bin/se...?/10086052.htm

    --
    Tony Pedretti



  10. #10
    Martin Stepanek NNTP User

    Re: More "Tree or server cannot be found"-problems

    ours is disabled and while it helped with the speed of login generally it didn't rectify the sporatic "authentication" issue.

    >>> Tony Pedretti<ynotpe@NoSpAMhotmail.com> 22/10/2005 2:20:07 am >>>


    A five or more minute wait for a successful login suggests entries are being
    made to one of the Bad caches as that is their default timeout.
    The one consistent "Tree or server not found" error we saw recently (likely
    caused by third-party network services) was on a new laptop with both wired
    and wireless NICs and said services/utilities enabled. We found reducing
    the Bad Address Cache Timeout to anything below 250 was reliable (we went
    with 200 to be consistent and to compensate for slower boxes).

    What affect does reducing or disabling the Bad Address Cache Timeout on the
    Advanced Settings tab in client's properties have?...

    How does the Bad Address Cache work?
    http://support.novell.com/cgi-bin/se...?/10093267.htm

    Using the IP address or otherwise a default/preferred server is a reliable
    work around for an issue with service/name resolution but it shouldn't be
    seen as a permanent solution.

    For your second issue, please post the exact error message with the current
    client (4.91 SP1).

    You might also want to have a look at having the proper firewall ports open
    and some of SLP troubleshooting steps I posted earlier in this thread...

    Server or Tree not found after applying Windows XP sp2
    http://support.novell.com/cgi-bin/se...i?10095407.htm

    "Tree or server not found" error on bootup and immediate login
    http://support.novell.com/cgi-bin/se...?/10086186.htm

    NetWare Client registry settings to control the behavior of SLP
    http://support.novell.com/cgi-bin/se...?/10086052.htm

    --
    Tony Pedretti


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