Internal Server Error while accessing WordPress blog

Internal Server Error in WordPress appears in your blog page while trying to access any of the blog content or while accessing wp-admin page. Though I had backup in Dropbox, and can access FTP this is a worrying point as I cant access WordPress admin site using wp-admin link. Everything shows as 500 Internal server error. After a quick search over internet, could clearly see a solution that is apt for resolution.

Cause: While updating one of the plugins, this issue has occurred.

Resolution: Link here for reference. Follow any of method 1 or 2, (I have used method 1 for resolution)

1. Use phpMyAdmin to deactivate all plugins. Login to your site Control Panel, Access WordPress site database using any tool or through Control panel itself. Update the file as mentioned below,

1. In the table wp_options, under the option_name column (field) find the active_plugins row
2. Change the option_value field to: a:0:{}

Or

2. Reset your plugins folder via FTP or the file manager provided in your host’s control panel. This method preserves plugin options but requires plugins be manually reactivated.

1. Via FTP or your host’s file manager, navigate to the wp-contents folder (directory)
2. Via FTP or your host’s file manager, rename the folder “plugins” to “plugins.hold”
3. Login to your WordPress administration plugins page (/wp-admin/plugins.php) – this will disable any plugin that is “missing”.
4. Via FTP or your host’s file manager, rename “plugins.hold” back to “plugins”