Unable to access store admin panel - 500 Internal Server Error

[panski]

Hello.

I'm unable to access store admin panel. Everytime I input admin login, password and press submit - 500 Internal Server Error this appears.
It has worked well until today.

Any ideas?

[llegrand]

In my experience  a 500 INTERNAL SERVER area should be started with at the hosting end.
Perhaps they have changed something on the server where your site is located -  a version of php, or mysql or something.   Perhaps they have changed requirements and now some file permission on your AbanteCart files doesn't meet a requirement from the server side.

There should be server files logs that gives you more info about the SERVER error -  if you don't know how to find them,  then again -  ask your host.

but I believe you need to start your "fix' from the server side.

Regards,
Lee

[TerraNetworkUK]

If you are using cPanel, you may find more details in "cPanel > Logs > error logs".

If the logs don't show anything, then I agree next step is to contact your host. The most common issues are:
* .htaccess errors such as symlink restrictions or redirect loops
* incorrect file / folder permissions

These can be easily diagnosed and fixed by your hosting provider.