Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
The authentication problem could be one of two things:
- either you are not entering anything like the correct 'passphrase' for access to your WiFi
- you are entering it correctly, EXCEPT for the difference between UPPER CASE and lower case letters.
So I advise you to double-check your passphrase. And also make sure you are entering it correctly, as to the distinction between upper-case and lower-case letters in the passphrase.
- another thought: are you selecting the right WiFi router (or, 'SSID' or wireless network name) to connect to? the right passphrase will never work on the wrong router, in all likelihood.
- and about that: Has your local wifi router been reset recently, just before the problem began? that would reset its passphrase, and probably its SSID name also, to default values. To check on this, look for whether the SSIDs with the strongest signal do not have familiar names, etc. Also try to recollect whether this might have happened lately.
I am aware that an authentication problem may be something else also. In case the above does not cover the problem, there are these considerations:
1: what is the exact error message about Authentication? it could be important.
2: does any other device, including for instance a friend's handheld, get connected to the local WiFi with good results and without authentication errors?
Trying to connect to WiFi with another device might help with this problem, by showing whether or not something is wrong with WiFi router or with its passphrase.
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