Too many simultaneous connections. (Failure)

Hello Sebastian,

We've an article that provides further information regarding this message.

Archived - Using a Gmail account on multiple devices

http://support.apple.com/kb/TS2976

Cheers,

Allen

I am too sure about this.

I have read many posts and all seem to point to the same result; It's gmail only allowing so many connections.

My own case seem to discredit this answer.

Here is what I found.

I had a Belkin N1 modem router for several years and never had any issues with gmail. Then the N1 modem failed; I could not wait for the warranty claim to be sorted out so I went and bought a new Netgear modem router. Soon after setting up the Netgear router I encountered the "too many simultaneous connections" error.

It's at this point that I started reading about this error and it made me wonder ... How come I never had this issue before? The entire time I used the Netgear router I got the error.

Anyway a month and a half later I got the warranty sorted out and received my Belkin replacement router.

After setting up the new Belkin router the error is gone.

I seems to me that the router might have something todo with this.

Hi all. I can confirm that the router does have something todo with the issue. After yelling at Netgear support for 6 months they finally manage to resolve the issue. If you have a Netgear router here's the fix.

Changed: Setup -> QoS Setup -> Turn Internet QoS on (check it)

Changed: Advanced Wireless settings:

2.4Ghz and 5Ghz

Fragmentation Length: 2306

CTS/RTS Threshold: 2307

Thank you so much this is the best answer in all the WWW!

Hi,

I have the same problem with a time capsule but I don't find the way to change fragmentation length and CTS/RTS Threshold?

Does anyone know how to do it?

Hi,

I'm sorry it does not seem possible to do. Look here:

http://forums.macrumors.com/showthread.php?t=1091891

Effectively, it seems that it is not possible...

Thank you anyway for answer.

After 3 weeks scouring the web I did this fix on my Netgear router and it works! Make sense as I have a colleague who has the same Gmail accounts, devices and settings and no problems. The only difference is the brand new Netgear Router I have.

Many thanks for finding this solution.

Cheers,

Andrew

I will support your theory on the cable modem being the problem.

My internet connectivity was horrible with an Aris. Oceanic provided me a new cable modem (a Ubee). It was still horrible.

Using netstat I found "tons" of TCP connections in other-than "ESTABLISHED" state.

Neither the Aris or the Ubee had an obvious way of configuring it into "bridge mode".

After a lot of searching around I found this link:

http://www.jaredwatkins.com/2011/01/putting-the-ubee-cable-modem-from-time-warne r-in-bridge-mode/

There are other links that provide the same information. You should refer to more than one before you muck around with this.

Once set in bridgemode, DHCP/NAT functionality was performed by my Apple Airport Express (Tower). Netstat now rarely shows connections in anything other than ESTABLISHED state.

I will be replacing my rented Ubee with an owned Motorola next week which will save me about $6/month. The Ubee will still be here but only to provide phone service. (Although Oceanic might provide a different kind of modem.)

TThis worked a treat, after months and hours on phone to google and apple cheers mate!! Thanks a lot...

Neither of these links still work. Are there new ones somewhere?