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When I try to register my Fingerprint a message appear to me says that
Fingerprint enrollment time limit reached
This is the message appear
I tried this solution for hundreds of times and didn't work
Same problem
Hi @Andaliiiib, sorry to hear about this. 
Do you see this message as soon as you go to Settings > Lock screen & security > Fingerprint Manager and go through the first steps with adding a PIN/Password or pattern screen lock or does it appear after a while?
Have you been able to register your fingerprint(s) earlier in your phone or is this the first time you are trying to register it? You can also try registering another finger and see if that works.
If there is no change with another finger and that the message appears directly when you try to register your fingerprint, I would recommend that you perform a software repair using Xperia Companion. This will delete all data that is stored on the internal storage of your phone and reinstall the latest available software.
Since data is being deleted, creating a backup using Xperia Companion before starting with the repair is advised.
Let us know how it went!
I registered my Fingerprint before
But i erased it and try to register it again
When my finger touch the power key this message automatically appear
I made a factory reset yesterday but the same problem remains
Go to Settings -> About phone -> Diagnostics -> Test -> Fingerprint sensor.
Did it pass the test?