Blog / Sysadmin

Multiple connections to a server or shared resource by the same user…

October 24, 2008

Error Message:

\\x.x.x.x is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions.

Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed. Disconnect all previous connections to the server or shared resource and try again.

I get this once in a while when working on files …

Security Warning: “The publisher could not be verified”

October 20, 2008

Warning Message: 

The publisher could not be verified. Are you sure you want to run this software?

I got this warning message last week while testing a group policy object to run a small program from a network drive when users log in to the domain.

After some googling, it turned out that this feature was added in Windows XP Service Pack 2 and it checks whether the program has a digital signature attached. …

Converting Physical Citrix Server to VMware Using VMware Converter

September 14, 2008

We converted one of our physical Citrix servers yesterday to VMware ESXi also and it went smoothly as well. No issues so far, so if you’re thinking of doing the same thing I can confirm that it works.

We also use RSA SecurID for authentication and it still works after the conversion with no changes made to the RSA Authentication Manager or RSA ACE Agent (using the same IP address after the conversion of course). …

Converting Microsoft Virtual Server 2005 Virtual Machines to VMware

September 14, 2008

We just converted 3 of our virtual machines running on Virtual Server 2005 R2 to VMware ESXi yesterday and it went pretty smoothly with just a couple of minor issues.

The first issue is the mouse cursor not working in VMware console after installing the VMware tools. The fix is just a simple registry edit:

  1. Open Registry Editor (regedit)
  2. Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class\{4D36E96F-E325-11CE-BFC1-08002BE10318}
  3. Double-click on UpperFilters and delete msvmmouf.
  4. Reboot the VM.

Source: …

VMware ESXi

August 30, 2008

I just found out last night that VMware ESXi, VMware’s bare metal hypervisor, is now available for free. I got really excited and wanted to try it out right away so I decided to use my Lenovo ThinkPad X60s laptop as a test machine. I backed up all my files last night so I can play around with ESXi on it today.

So I installed it from the bootable CD which seem to have …