Trouble connecting to wireless networks

Question

When updating the software and the latest version Android 5.0 Lollipop, my smartphone Xperia Z2 gives me problems, fails linking and portable wifi area and can not use the data with another device or PC to link them together. The message that jumps on the screen is as follows:
An error occurred during sharing Internet. My wife has a xperia M2 and also happens the same since update. Solution that I have to correct this error.

Answer 1

question before the update worked well or just do not know or you have not noticed.
first you have a backup of data.

put in google "mobile name and the problem" and if you do not find your model test solutions that provide for other models to see if they are worth.

if not I would do this

wipe
if this does not work factory reset and then you inform the manufacturer of what you observe after upgrading to correct it

not only my opinion you Closures
It is made only from minimal information

remember if it solves not forget to stop by and tell and give solved to enable Popcorn resolved so that those who have the same problem here know that there is a solution

Answer 2

Try the following:
In case you have not, try resetting the values ​​of APN in Settings> More> Mobile networks> Access Point Names, then press the "Menu" key to find that option.