Wifi connection htc one m8

[AC Question]

So, did the marshmellow update. Now my htc one M8 will not connect to my work wifi. Spoke to android went through all the possible resets etc, spoke to my IT department, the network is running fine and nothing has changed in terms of permissions and it is not blocking my phone at all. My phone will connect to all other wifi zones.

Can anyone suggest anything!

 

[Almeuit]

I would try doing a factory data reset on the device. Sometimes big updates can cause random bugs and a quick wipe / re- setup can fix it.