1. Plugin errors
Plugins add more functions and features to a website but also add more code. So it requires regular update to keep up with any security patches or new standards. If the update is not made, the plugin could break and cause your website to go down. Sometimes even an update can cause a site problem. Be sure to remove any outdated plugins no longer used on your website.
2. Server or hosting provider error
If your website goes down and you haven't made any changes, the issue could be with your server or hosting provider. Your hosting provider must fix the problem unless you host the website on your own servers.
Larger websites need more resources -- such as bandwidth, storage and memory -- to accommodate more traffic and to keep running smoothly.
If your site grows, you should revisit your plan to see if you need to update it. Also, if you regularly hit your limit on bandwidth and storage allowance, you should upgrade your plan, consider a new reliable host or switch the hosting type.
3. Expired domain and/or hosting
Expired domains can cause your site to crash, and you could lose the domain to your website if it expires and someone else registers it in the meantime. The domain name of your website is the address visitors use to access your site, and every website has a domain name.
Make sure you renew your website ahead of time or set your domain to automatically renew to prevent it from expiring without your knowledge.
If you see the "This site can't be reached" message in your browser, this is most likely a domain issue.
4. Malicious attacks
Malicious attacks can also overwhelm your servers and crash your website. There are endless bots crawling through websites trying to break the login areas by choosing username and password combinations at high speeds.
How to avoid these malicious attacks:
Finding a secure and reliable hosting service with good security measures is one of the best defenses for your information. Other good defense mechanisms include the following:
- Firewalls
- Two-factor authentication
- 24/7 security monitoring
- Reinforced DDoS protection
- Virus scanning and removal
You should also use a secure password for your admin account and update it regularly. Be sure to keep your site updated, as outdated sites are vulnerable to attacks.