We had the same problem with the Dell Venue 8 Pro after switching Airplane Mode on and then off -- We could not turn Wi-Fi back on.
The solution that worked for us was to go to the Control Panel App, then System and Security -> System -> Device Manager -> Network Adaptor (there may be an easier way to get here, but I'm still trying to figure this thing out). Double click Dell Wireless... then click the Driver Tab. Click the Disable button, wait a few seconds, then click the Enable button. Close those windows then turn Wi-Fi back on. It worked for us. Good luck.
Thats not the same probem - there is no issue disabling airplane mode.
Is Brian from Dell monitoring this?
There are obviously issues with wifi bringing the V8P out of sleep so would be nice to hear if Dell is working on this....
To be clear, toggling "Airplane Mode" on/off has the Opposite effect on WiFi and Bluetooth; Airplane Mode ON = WiFi and Bluetooth OFF...
Most of the posts to this thread about "Airplane Mode" appear to be about being unable to (easily) turn WiFi and Bluetooth back on by toggling Airplane Mode OFF after waking from SLEEP; WiFi just REFUSES to become active again — without lots of cursing and hammering! For me this is kind-of a big deal, because — by default — WiFi remains ON during SLEEP and will run down the battery after a day or less; I want to conserve my Venue battery by using Airplane mode before putting it to Sleep. At this point, it's such a hassle to re-activate WiFi, that I've been shutting-down instead.
I haven't noticed any posts from "Brian..." for several days, so I believe that directly contacting Dell "Mobility Support" (1-800-308-3355 opt.3) is the most-reliable way to bring this sort of issue to the attention of "Somebody Who Cares..." in Dell Engineering. At this time the level-1 techs aren't yet familiar with the various issues affecting Venue products, so you need to be patient while they attempt to prove YOU are doing something very-wrong or stupid (referring to many user reports in this forum may get them past that hang-up more quickly). Be certain to get them to repeat-back what they understand the issue to be, and insist on an email confirmation with a "Service Request Number" and contact info. If you don't feel that the call is going the way you want, you may insist on speaking with a Floor Supervisor or Manager.
This forum can be useful for exchanging "How do I...?" questions and accessory suggestions, but as soon as it appears that any number of users are experiencing an actual bug or defect, those affected need to contact Dell Support directly and get that issue logged. At the bottom of the Dell.com home page, you'll also find "Contact" and "Feedback" links — which are more-suitable for requesting enhancements or policy concerns, rather than reporting bugs.
Update: So far so good, did a factory reset of the Venue8, which by default contained the two MS KB's plus the rollup - so I left these intact. I immediately turned off Windows updates from auto-installing as well. I also installed only one DELL Update - for the Wireless driver, all others not applied (bios etc).
Other things done were to assign a static ip to the venue in my router config, and also installed a WiFi repeater to boost wireless around the house. 2 days on and everything's working just fine!
I still believe some MS KB being the cause of this, but I personally cannot attribute it to http://answers.microsoft.com/en-us/windows/forum/windows8_1-networking/dell-venue-pro-loses-wireless...
The way you describe the issue fits my device exactly. I was wondering if you've managed to find a solution other than shutting down or dis/renabling the adapter?
what works for me is just hitting "disconnect" and "connect" limited goes away and then shows connected, voila! kinda blows as it defeats the whole benefit of Intel's connected standby chipset feature., but I think that's the problem.
Yes, but I wish I'd thought of it sooner...
Rather than using Airplane mode to toggle WiFi, I've been turning WiFi on/off directly, and haven't yet experienced a problem turning it back on when waking from sleep. I initially avoided doing this because it doesn't affect the Bluetooth state, and the Bluetooth setting takes more clicks to get at. However, since I'm not using any Bluetooth devices routinely, I've just kept it off...
This is not a "fix" but it is an easy work-around for me; I hope it works for some others experiencing the same problem. A real fix would be triggering a time-out to Hibernate the tablet during Sleep after an hour or-so, and before the battery drops to a critically low state.
Thanks fellas. My device, after waking from sleep, won't turn wifi back on unless I restart the machine (not airplane - just wifi disconnect). I wonder if my update history is different from yours, Lou? Have you installed the infamous 'disavowed' updates?
You are right of course that a true fix would be a Dell software response to this situation - the least they could do is give us a sign they're on it...
Have you flashed the latest firmware update on your device? I'm not having the issues for almost a month now after the Microsoft patches were fixed - by Microsoft - and having Firmware 4 on my device.