Today one of my client was facing an issue. User was unable to login into the dashboard of Magento admin. Error message in the system.log was as follows:
WARNING: Session size of 260970 exceeded allowed session max size of 256000
Magento version was 2.4.5-p1. He was getting this issue once they have upgraded their website from version 2.3.5.
To fix this I have increase the session size by running this command. 
<pre><code>php bin/magento config:set system/security/max_session_size_admin 1024000
</code></pre>

Today one of my client was facing an issue. User was unable to login into the dashboard of Magento admin. Error message in the system.log was as follows:

**WARNING: Session size of 260970 exceeded allowed session max size of 256000**

Magento version was 2.4.5-p1. He was getting this issue once they have upgraded their website from version 2.3.5.

To fix this I have increase the session size by running this command. 

```
php bin/magento config:set system/security/max_session_size_admin 1024000
```


Roshan Lal

Roshan Lal

Magento 2.4.5-p1 WARNING: Session size of 260970 exceeded allowed session max size of 256000