E-mail not working since beginning of December

Question

my e-mail has suddently stopped working and have tried to enter set up but it does not recognise my user name or password - i have tried everything suggested but nothing works pls help

Answer 1

Hi and Welcome to the Community!
With a strong carrier network signal (e.g., not merely WiFi), I suggest the following steps, in order, even if they seem redundant to what you have already tried (steps 1 and 2 each should result in a message coming to your BB...please wait for that before proceeding to the next step):
1) Register HRT
KB00510 How to register a BlackBerry smartphone with the wireless network
Please wait for one "registration" message to arrive to your Messages app
2) Delete and Resend Service Books (pre-BB10 devices only)
KB05000Delete the service book for the BlackBerry Internet Service email account from the BlackBerry smartphone
If you have no CMIME entry, then skip the deletion
KB02830 Send the service books for the BlackBerry Internet Service
Please wait for "Activation" Messages, one per already configured email account, to arrive in your Messages. If you have no already configured email accounts, please wait 1 hour.
3) Reboot
Pre-BB10 Devices ONLY. With power ON, remove the back cover and pull out the battery. Wait about a minute then replace the battery and cover. Power up and wait patiently through the long reboot -- ~5 minutes.
BB10 Devices. Hold the top button down until the counter reaches zero. Wait for the device to be fully shut down (e.g., nothing at all displayed on the screen, no LED lights, etc.). Hold the top button until the red LED is lit. Wait through the full boot-up process. IF this fails, you can attempt the battery-pull method above, but it is normally NOT recommended unless nothing else works.
See if things have returned to good operation. Like all computing devices, BB's suffer from memory leaks and such...with a hard reboot being the best cure.
Hopefully that will get things going again for you! If not, then you should try deleting and re-adding your configurations for the affected email accounts. Otherwise, it depends on exactly what credentials you say are not being recognized...
If it is your BIS credentials, then you should contact your mobile service provider for formal support.
If it your BBID credentials, then refer:
http://supportforums.blackberry.com/t5/BlackBerry-World/How-to-regain-access-to-your-BBID/td-p/25467...
Cheers, and Good Luck!
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
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