Showing posts with label Network. Show all posts
Showing posts with label Network. Show all posts

Friday, April 12, 2013

ASUS RT-N66U Dark Knight

After a few months of tolerating with the bad wireless signal and speed performance from using the wireless router given by my local ISP, I decided to get it replaced. 

I have quite a number of wireless devices at home ranging from laptops running Windows OS, MacBook, iOS devices, Androids devices, Blackberry devices.  Out of all these devices, iOS devices and MacBook have the worst wireless performance when using the ISP’s wireless router.  Below is the speed test result of my iPad.

iPad Speed Test with ISP router

Monday, May 07, 2012

Windows XP unable to change domain

An user was having trouble getting his Windows XP laptop authenticating with the AD domain.  He sent his laptop to the support team and the support engineer was about to try dis-joining and re-joining his laptop from the AD domain but was unable to do so.

The Change button for renaming computer name and changing domain has been disabled and greyed out.  However, the note at the bottom provides a hint of what might be the cause of it.

Note: The identification of the computer cannot be changed because:
- Networking is not installed or is not properly configured.

Change Domain Greyed Out

Friday, February 17, 2012

IPCONFIG–An internal error occurred: The request is not supported.

I helped to troubleshoot a laptop (running Windows XP with SP3) which was having problem getting IP address.  The laptop was not able to get IP address and I got the following error when I ran ipconfig.

Windows IP Configuration
An internal error occurred: The request is not supported.
Please contact Microsoft Product Support Services for further help.
Additional information: Unable to query host name.

ipconfig error

Sunday, July 17, 2011

Samsung Galaxy Tab as Wireless Access Point after Gingerbread Upgrade

I was trying to enable Wireless AP on my Samsung Galaxy Tab since I upgraded it to Gingerbread last month.  I noticed that there is a little bit of changes since my last blog on how to do so (Samsung Galaxy Tab as Wireless Access Point).

It still start by going to Settings and select “Wireless and network”.

Here is where the different starts.  Select “Tethering and portable hotspot”.

Select “Portable Wi-Fi hotspot settings”.

Touch the box with the tick to enable the AP function.  The tick should turn green.

If this is the first time you are setting up your Galaxy Tab as an AP, you will need to configure the SSID, Security and Password.

Touch Save after the configuration.

You should see a blue box at the top left hand corner if the AP function is enabled.

Friday, July 01, 2011

Accessing File Share is Very Slow with Windows 7 SP1

A user complained that accessing a file share on a particular server running Windows Server 2003 is extremely slow.  It was so slow that Windows Explorer just hanged!  Accessing other file shares on other servers running Windows Server 2003 and 2008 is working fine.

After some troubleshooting, the problem was resolved by disabling Windows Auto Tuning.

First try this and reboot.

C:\>netsh int tcp set global autotuninglevel=disabled
Ok.

If it still does not solve the problem, try this and reboot.

C:\>netsh int tcp set heuristics disabled
Ok.

Do remember to the command in elevated mode (Run as Administrator).  Otherwise you will receive the following error.

Set heuristics command failed on WSH The requested operation requires elevation
(Run as administrator).

We are not seeing this problem with Windows 7 without SP1.