While trying to upload a file to WordPress eg a WordPress theme or xml file for Blogger to WordPress migration, you may get an error that your file size is too large. In this case, you would need to increase your maximum file upload limit.
The favorite method I use to increase max upload size in WordPress is by editing the php.ini file.
That’s how I increased WordPress upload_max_filesize from 32MB to 64MB
You can confirm your WordPress max upload size by navigating to “Media > Add New”
There are other methods though and if they tricks fail to work for you, you would have to contact your web hosting provider to increase the limit for you.