Have you ever come across this error message after updating a few things in your WordPress Dashboard?
First you need to launch your FTP application. Some use FileZilla or maybe even Dreamweaver. Either works fine, or you can use your hosting providers File Manager to access your server files. Once logged in and you can view your files on the remote server, you’ll need to navigate to the root directory of your website.
Once there scroll up and look for the .maintenance file. It won’t have an extension.
I highlighted the file in red. You’ll just need to click that and choose a delete option to remove it from your server. Once removed navigate back to your website and refresh your page. You should be able to get back to your WordPress Dashboard like normal.