Link>
Welcome!- What Hardware version is your router? Look at sticker under router.
- Link>What Firmware version is currently loaded? Found on the routers web page under status.
- What region are you located?
D-Link routers most have this enabled by default and it's been grayed out with out any ability to configure it. I believe it's either due to WiFi setting dependency or requirement for WMM or by design of this feature. Can you try setting single mode G, WPA and TPIK only with Auto 20/40 or 20Mhz only and enable HT-20/40Mhz co-existence under Advanced/Adv WiFi settings if you have it? Then try to disable WMM.
Wireless ConfigurationsLinks>
Wireless Installation Considerations and
Managing Signal Congestion and
Good Neighbour Policy - Ensure the default (dlink) SSID name is changed. Can be anything and not something that's already in use by any neighboring WiFi routers. Under Setup/Wireless/Manual.
- What wireless modes are you using?
- 2.4Ghz Routers only: Try single mode G or N or mixed G and N?
PC Web Browser ConfigurationsWhat browser are you using?
Try Opera or FF? If IE 8, 9, 10 or 11, set compatibility mode and test again.
Disable any security browser Add-ons like No Script and Ad-Block or configure them to allow All Pages when connected to the router.
Clear all browser caches.
Be sure to log into the Admin account on the router.
Try turning off these features in Chrome: Top right corner, little bars for options > Settings > Settings (on left) > Show advanced settings.
Uncheck these:Use a web service to help resolve navigation errors
Use a prediction service to help complete searches and URLs typed in the address bar
Predict network actions to improve page load performance
Enable phishing and malware protection