Macbook Pro stuck after I enter my password

I found a solution for this problem by robertk1 and he writes the following:

I would enter my password correctly and then the cursor would change to the spinning pinwheel and just sit there forever. The only way out was a power off reboot.

This is exactly what happend with my machine and it looks like it's same with yours. I hope this also works with FileVault enabled. There are two ways to solve this. With and without a guest account.

In case you do have access to the guest account follow these steps by hijoncon:

1. Login as guest
2. Open Terminal (cmd + space then search terminal)
3. Enter su your_account
4. Enter your password
5. sudo find /private/var/folders | grep com.apple.LaunchServices | grep csstore
6. Remove every .csstore your find like this sudo rm /private/var/folders/cd/someLongRandomNameHere/someFolderNumberHere/com.apple.LaunchService-whatever.csstore

If you don't have access to the guest account you can try different ways to get into the machine (like SSH) robertk1 suggests:

To do this, you'll either need to be in a recovery console, or ssh into the machine, or boot from an external drive, or otherwise somehow get to a command prompt.

Once you are in the machine you can delete the files like described above in the last steps.

I know this might not be an option for you is not really a solution... But what I did is to reinstall the OS by entering into Recovery Mode with Command + R right after pressing the power button, same as you would do with safe mode.

I didn't lose my files by doing so, but it took 3 hours more or less for the installation to be completed. Let me know if you found another way.

Try this:

Fill the password as usual, but don't hit enter yet. Hold the options button and then click the login arrow button.

I've been stuck for a while now, finally this solved, a method in which I introduced the options button. Hope this helps.