hotfixJust a quick heads up on a new KB article we published today:

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Symptoms

When connecting a Microsoft Application Virtualization (App-V) client version 4.5 or later to a legacy Softgrid server (i.e. one running a version prior to 4.5) you may get the following error:

The server will not allow a connection without valid NTLM credentials.
Please report the following error code to your System Administrator.
Error code: xxxxxx-xxxxxx 0A-00002002

Cause

This can happen to your App-V 4.5 and 4.6 clients if they are connecting to App-V Management Server that has been rolled back through an uninstallation of App-V 4.5 and a reinstallation of an earlier version has occurred. This is caused by the presence of SPNs (Service Principal Names) that are not removed during an uninstallation of the App-V 4.5 Server.

Resolution

You can check for these SPN remnants by typing the command below:

setspn -L hostname

- Where hostname is the name of the Softgrid server.

The SPNs will have the following format:

- Softgrid/Hostname
- Softgrid/FQDN

If the SPNs are present, you can manually remove them using the SETSPN –D command.

More Information

Softgrid servers prior to version 4.5 did not support Kerberos for authentication.

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For the most current version of this article please see the following:

2619454: Rolling back an App-V server upgrade may result in clients receiving xxxxxx-xxxxxx0A-00002002 errors

J.C. Hornbeck | System Center Knowledge Engineer

App-V Team blog: http://blogs.technet.com/appv/
AVIcode Team blog: http://blogs.technet.com/b/avicode
ConfigMgr Support Team blog: http://blogs.technet.com/configurationmgr/
DPM Team blog: http://blogs.technet.com/dpm/
MED-V Team blog: http://blogs.technet.com/medv/
OOB Support Team blog: http://blogs.technet.com/oob/
Opalis Team blog: http://blogs.technet.com/opalis
Orchestrator Support Team blog: http://blogs.technet.com/b/orchestrator/
OpsMgr Support Team blog: http://blogs.technet.com/operationsmgr/
SCMDM Support Team blog: http://blogs.technet.com/mdm/
SCVMM Team blog: http://blogs.technet.com/scvmm
Server App-V Team blog: http://blogs.technet.com/b/serverappv
Service Manager Team blog: http://blogs.technet.com/b/servicemanager
System Center Essentials Team blog: http://blogs.technet.com/b/systemcenteressentials
WSUS Support Team blog: http://blogs.technet.com/sus/

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