How to fix "cannot log in to PrestaShop" issue?

[GlennaJAllen]

Hello everyone,  

I recently encountered a strange problem with my PrestaShop store:  
- The back office login page loads fine,  
- but after entering the correct username and password, it just reloads without logging me in.  

I have already tried:  
- Clearing cookies and cache,  
- Using different browsers,  
- Checking PHP version and server error logs.  

Has anyone faced the same issue before? Is this usually caused by session/cookie settings, or something else with hosting configuration?  

I found a detailed guide that tries to explain multiple scenarios of this problem (quite long and technical), so I put it here in case anyone wants to look deeper see more

Edited August 21 by GlennaJAllen (see edit history)

[Mehdi Bourechka]

11 hours ago, GlennaJAllen said:

Hello everyone,  

I recently encountered a strange problem with my PrestaShop store:  
- The back office login page loads fine,  
- but after entering the correct username and password, it just reloads without logging me in.  

I have already tried:  
- Clearing cookies and cache,  
- Using different browsers,  
- Checking PHP version and server error logs.  

Has anyone faced the same issue before? Is this usually caused by session/cookie settings, or something else with hosting configuration?  

Clear var/cache/*, delete browser cookies, and try in private mode. Check that PS_SHOP_DOMAIN and PS_SHOP_DOMAIN_SSL match your exact URL. In database set PS_COOKIE_CHECKIP to 0 to avoid IP conflicts. If it still fails, switch to Classic theme and disable non-native modules to test.

[WebCommercify]

Hello, what is the PS version? When this problem started?

[Mehdi Bourechka]

16 hours ago, GlennaJAllen said:

Hello everyone,  

I recently encountered a strange problem with my PrestaShop store:  
- The back office login page loads fine,  
- but after entering the correct username and password, it just reloads without logging me in.  

I have already tried:  
- Clearing cookies and cache,  
- Using different browsers,  
- Checking PHP version and server error logs.  

Has anyone faced the same issue before? Is this usually caused by session/cookie settings, or something else with hosting configuration?  

You will never believe it

When we had the same problem, the last resort working solution was to restart the Wifi box… and it worked somehow