Aleksandar's computer workshop

Let's see what Aleksandar was fixing today.
My findings, tips & tricks related to computers, internet, programming and other stuff I was working with.

Terminal Service client not using saved credentials

When connecting via Remote Desktop to Windows 2008 server it always fails with the following message:

"Your credentials did not work. Your system administrator does not allow the use of saved credentials to log on to the remote computer because its identity is not fully verified. Please enter new credentials."

This error occurs only when I try to go from domain client computer to non-domain server.

In order to fix this you have to do following:

  1. Log on to your local machine as an administrator.
  2. Start Group Policy Editor - "gpedit.msc"
  3. Navigate to "Computer Configuration\Administrative Templates\System\Credentials Delegation".
  4. Double-click the "Allow Saved Credentials with NTLM-only Server Authentication" policy.
  5. Enable the policy and then click on the "Show" button to get to the server list.
  6. Add "TERMSRV/*" to the server list. You can also put their exact server name or for example to enable the setting on all servers in "" domain you can type "TERMSRV/*".
  7. Confirm the changes by clicking on the "OK" button until you return back to the main Group Policy Object Editor dialog.
  8. At a command prompt, run "gpupdate" to force the policy to be refreshed immediately on the local machine


Did you know that Microsoft has free server edition especially for Virtualization? Not? Check this out

Microsoft Hyper-V Server 2008 R2 is a stand-alone product that provides a reliable and optimized virtualization solution enabling organizations to improve server utilization and reduce costs. Since Hyper-V Server is a dedicated stand-alone product, which contains only the Windows Hypervisor, Windows Server driver model and virtualization components, it provides a small footprint and minimal overhead. It easily plugs into customers’ existing IT environments, leveraging their existing patching, provisioning, management, support tools, processes, and skills. Some of the new key new features that are available in Microsoft Hyper-V Server 2008 R2 are live migration, cluster shared volume support and expanded processor and memory support for host systems.

Product page:

Windows Virtualization Team Blog


Installation sample

Remote Server Administration Tools for Windows 7


How to move Windows DNS Server zones to another Windows DNS server

If you are looking to transfer an entier DNS Server including Active Directory settings and things like that, you may better use DNSDump.cmd script from here:

Just to migrate the zones, simply do following:

1. On the DNS server that is currently hosting the DNS zone(s), change any Active Directory-integrated zones to standard primary. This action creates the zone files that are needed for the destination DNS server.
2. Stop the DNS Server service on both DNS servers.
3. Manually copy the entire contents (subfolders included) of the %SystemRoot%\System32\DNS folder from the source server to the destination server.
4. On the current (old, source) DNS server, start Registry Editor (Regedit.exe).
5. Locate and click the following registry subkey: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\DNS\Zones
6. Export the Zones entry to a registry file.
7. Locate and click the following registry subkey: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\DNS Server\Zones
8. Export the Zones entry to a registry file.
9. On the destination (new) DNS server, double-click each registry file to import the Zones subkeys into the registry.
10. Bring the current DNS server down and transfer its IP address to the destination DNS server.
11. On the destination DNS server, start the DNS Server service. To initiate the registration of the server's A and PTR resource records, run the following command at a command prompt: ipconfig /registerdns
12. If this server is also a domain controller, stop and restart the Net Logon service to register the Service (SRV) records, or run the following command at a command prompt: netdiag /fix
13. The standard zones that were previously Active Directory-integrated can be converted back to Active Directory-integrated on the replacement DNS server if it is a domain controller.
14. Verify that the SOA resource records on each zone contains the correct name for the primary server and that the NS resource records for the zone(s) are correct.

How to fix Windows Photo Gallery Yellow Tint Background Problem on Windows 7

When displaying and viewing photos in Windows Photo Gallery of Windows 7, some monitors or LCD flat panel displays may have a strange problem in which the images will be shown with a orange or yellowish tinge in photos background, affecting the display natural color of pictures to become something like Sepia effect. The entire window on Windows photo gallery appears to be colored in slightly yellowish tint, and is therefore appear darker, including the panels on either side of the photo display which which appear yellow on the desktop but are white in actual.The yellow tinted photos may also affect other default image viewer in Windows 7. In some case, the problem goes away when the photos are viewed in slideshow mode, or in some other image manipulation tool such as Adobe Photoshop, Paint or Paint.NET or photo management utility such as XnView.

The symptom is likely to occur after update of incompatible monitor driver, especially on Samsung LCD flat panel monitor driver update via Windows Update. The cause for the error is the usage of incorrect color profile for the monitor in Color Management setting.

To solve the problem and restore normal colors in Windows Photo Gallery, you can try one of the resolutions below. 

  1. Control Panel in icon mode

  2. Color Management

  3. Select your display device

  4. Check the box “Use my setting for this device”

  5. Click Add

  6. Choose “sRGB IEC61966-2.1” (this is the color profile that IE is using)

  7. Set it as default


Exit from all dialogs and reboot your computer, and the color problem on Windows Photo Gallery is fixed.

If your system doesn’t have sRGB IEC61966-2.1 profile under the ICC Profiles, you can download the color profile here

Tip for advanced users: You can open Color Management via command line using %systemroot%\system32\colorcpl.exe