Try to reset wireless security. or this post may help.
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Vista Wireless Limited or No ... > In many cases, Limited or no connectivity
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Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
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"NASA DOc" <(E-Mail Removed)> wrote in message
news:B97D2538-0869-49E8-817C-(E-Mail Removed)...
> Mine is doing the same thing.
>
> EVERYTHING is UNCHANGED, yet, computers, printers, access points, etc are
> dropping off 1-by-1.
>
> I believe it is a MS update problem. Someone else suggested it from
> sp2/sp3.
>
> I have done all these things. listed by "ato_zee" above.
>
> Static IP does work, but I want a DHCP network for all mobile devices.
> Printers, Routers, etc, I already had fixed static IPs. They are fine. I
> want a wireless DHCP environment that I used to have. Windows Update
> screwed
> it up, somehow. Anyone know how to fix it up?
>
> BTW:
> - WLAN Routers NOT moved, and redundant overlap in place
> - No new hardware/software; NO firewall changes
> - No new wireless phones, no VOIP, no hardward changes, no new devices
> - Changing wireless channels did not change things.
> - Moving to another location on another network, still did NOT fix things.
> - The problem is on (ALL) the wireless devices that use windows & windows
> wireless client, that drop-off, 1-by-1, presumably as they are used and
> update with Windows Update
> - I have reinstalled & updated all firmware & drivers on ALL hardware.
> NOT
> the problem. [on 3 separate networks that I am managing (1 T3 Cisco, 1 T1
> Signal, 1 Cable Linksys)]
> - Did not try "install it, Ethereal will show outgoing packets
> and (if any) received responses. It may be that for some reason DHCP
> responses aren't being received."
> - NOT poor signal (all have 5 bars, "excellent" with 54mbps)
> - even added AP wireless extender to verify. No change before/after using
> device, signal still the same, connectivity still the same, MAC verified
> connection, no difference
> - Hardwired (Cat 5e LAN) to Wireless Router NEXT TO IT, with more than 1
> laptop, still unable to connect to Wireless Network, only 169.254.*.* well
> (or to MY wireless network with 5bars, excellent strength, and "Little or
> no
> connectivity"
> - manually fixing IP, does allow computer to get to internet via wireless;
> BUT... prevents being able to ping other devices or allow software to find
> other network computers or printers; so, disabling DHCP wireless causes
> network connections to be lost.
> - Using "Microsoft Client" causes all these problems; however, diabling it
> and using the INTEL ProSet/Wireless adapter, I can easily connect to the
> network, on the computers having one. Also, on my PDA with Verizon agent,
> CAN connect. MS Client is definitely the problem, but WHY and HOW to fix
> it,
> I don't know.
>
> Any thoughts, here, anyone? Ideas on a patch, update, setting change,
> etc?
>
> I think this may help BOTH Megan & Myself, and probably a thousand other
> wireless users of MS wireless client who are suddenly unable to use their
> once-functional WLANs.
>
> THANKS
>
> - Ace
>
> ------------------------------------------------------------------------------------------------
>
> "Megan R" wrote:
>
>> I have never had trouble connecting to my wireless internet connection,
>> but
>> recently the signal has "little or no connectivity", and when I try to
>> repair
>> the connection, it seems to get stuck when it's renewing the IP address.
>> What could be some of the things causing this problem, and what can I do
>> about it?