Intel Wireless Card & Sophos AP100 BSOD Issue

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Hi there, we are trying to install some Sophos AP100's in a building to replace their old access points. (old ones are Proxim AP 700's)

The sophos ones are very expensive so we have only purchased 6 so far (around 20 AP's in total).

However, the minute we plug in the access point. A large chunk of the laptops start bluescreening every 10-30 minutes. Also the wireless drops out and reconnects every few minutes also.

The result being it's unusable. Now here's the interesting bit, even laptops on the other side of the building, out of range from the sophos AP will bluescreen.

The laptops affected are mostly lenovos, with some HP's and Toshiba's. All with intel wireless card (e.g. most have AC-7265 or similar model).

As soon as you unplug the sophos AP, all returns to normal.

Also it only blue screens if they're connected to the old AP. If they are connected to the new one, then it won't crash. Unfortunately we can't turn off the old ones as we need coverage everywhere.

We've tried updating drivers, updating the firmware on the old access points. Reducing transmission power on the AP's. Tried disabling wireless N and HT mode on the cards, but no joy.

We are thinking that we will just have to replace all of them. Unless there's something else that can be done, maybe an open source driver?

Here is the BSOD. It's identical on all of the affected machines. Also note, they will often BSOD two at the exact same time!

[idata]

Hello SBrown86,

As we understand, you recently added new Access Points to your environment and this caused some PC's with Intel® Wireless Adapters to have BSOD's. Checking the information of the Access Points, they have very different capabilities:The older Proxim* ORiNOCO AP-700 are 802.11a/b/g, with a maximum Data rate of 54 Mbps; the Sophos AP100 is 802.11a/b/g/n/ac with a maximum throughput of 1.3 Gbps (5GHz / 802.11ac) + 450 Mbps (2.4GHz / 802.11n).In order to discard issues with the wireless drivers, we advise to perform a clean installation of them (remove software and drivers before installing the new version).- You can obtain the latest Intel® PROSet/Wireless Software and Drivers depending on the adapter model and specific Windows* version from the https://downloadcenter.intel.com/ Intel® Download Center.- Make sure you apply the configuration from the advisory: http://www.intel.com/content/www/us/en/support/network-and-i-o/wireless-networking/000005544.html Recommended Settings for 802.11n Connectivity.- Also, check with the manufacturer of the different access points and obtain the latest firmware for them.If the issue persists, we will need more information from the computers as well as network configuration details.Let us know if you require further assistance and we will be glad to help. Keep in mind that you can also http://www.intel.com/content/www/us/en/support/contact-support.html Contact Intel® Support to create a new ticket with our support center, using this thread as reference.Regards,Jonathan.

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Thanks but I'm afraid we've already tried that.

[idata]

Hello,

Due to the nature of the issue, we will need more information from the computers, as well as details of the network configuration. Please check your private messages so we can continue working on this.As we mentioned before, you can also http://www.intel.com/content/www/us/en/support/contact-support.html Contact Intel® Support to get assistance from a support engineer.Regards,Jonathan

[idata]

We have not received any updates about this. Please let us know in case you require additional assistance.

Regards,Jonathan

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Hi, we have ditched the Proxim's and just ordered more Sophos AP's.

Many thanks

[idata]

Thanks for the update. Please let us know how it goes, or in case you have any additional questions.

Regards,Jonathan

[idata]

Hello SBrown86,

We would like to know if all went well, or in case you require additional assistance.Regards,Jonathan