Step-by-step help for your hosting

• VPS slow with high I/O wait: how to find and fix disk bottlenecks

  Is your VPS slow while CPU looks idle? High I/O wait means processes are waiting on the disk. Learn how to measure it with top and iostat, find the culprit and fix it.

  AdvancedLinux VPS2 min read

• How to fix a 503 Service Unavailable error

  A 503 Service Unavailable error means the server cannot handle the request right now. Learn how maintenance mode, resource limits, traffic spikes and stopped apps cause it.

  BeginnercPanel hosting2 min read

• How to fix a 502 Bad Gateway error

  A 502 Bad Gateway error means one server got an invalid reply from another behind it. Learn what causes 502 errors on hosting, CDNs and VPS servers, and how to fix them.

  BeginnercPanel hosting2 min read

• WordPress changes not showing: how to clear every cache layer

  Edited your WordPress site but visitors still see the old version? Learn which caches are involved, from the browser to LiteSpeed Cache and Cloudflare, and how to clear each one.

  BeginnerWordPress on cPanel hosting2 min read

• How to fix ERR_CONNECTION_TIMED_OUT

  ERR_CONNECTION_TIMED_OUT means your browser got no answer from the server at all. Learn how firewall blocks, wrong DNS, overloaded servers and local networks cause it.

  BeginnercPanel hosting2 min read

• Not receiving emails in cPanel: causes and fixes

  Emails not arriving in your cPanel mailbox? Learn how to check MX records, email routing, mailbox quota, filters and spam settings, and trace missing messages step by step.

  BeginnercPanel hosting2 min read

• Email deferred with 421 or 451 errors: what it means and how to fix it

  Emails delayed with 421 or 451 temporary errors such as greylisting, rate limiting or try again later? Learn what each means, when to wait and what to fix.

  IntermediatecPanel hosting2 min read

• How to fix DNS SERVFAIL errors

  A SERVFAIL DNS response means the resolver failed to get an answer for your domain. Learn the causes, from broken DNSSEC and dead nameservers to lame delegation, and fix it.

  AdvancedcPanel hosting2 min read

• Website still showing the old site after migration or DNS change

  Moved your site but still see the old version or old host? Learn how to check which IP your domain resolves to, clear caches at every layer and finish the DNS switch.

  BeginnercPanel hosting3 min read

• How to fix FTP "530 Login authentication failed"

  FileZilla shows 530 Login authentication failed or Login incorrect? Learn the correct cPanel FTP username format, how to reset the password and check IP blocks and TLS.

  BeginnercPanel hosting2 min read

• How to fix "Table is marked as crashed and should be repaired" in MySQL

  MySQL says a table is marked as crashed and should be repaired? Learn why tables crash, how to repair them in cPanel or phpMyAdmin, and how to use mysqlcheck on a VPS.

  IntermediatecPanel hosting2 min read

• cPanel disk space full: how to find what is using it and free space

  Hit your cPanel disk quota? Learn how to find what is filling your account with Disk Usage, clean up backups, logs, email and caches, and stop the problem returning.

  BeginnercPanel hosting2 min read

• How to fix email 554 errors (transaction failed and rejected)

  A 554 bounce means the receiving server rejected your email outright, usually for spam, policy or blocklist reasons. Learn how to read 554 messages and fix your sending setup.

  IntermediatecPanel hosting2 min read

• How to fix email 550 errors (5.1.1, 5.7.1 and more)

  A 550 bounce means the receiving server permanently refused your message. Learn what common 550 messages mean, from unknown users to SPF failures and blocklists, and how to fix them.

  IntermediatecPanel hosting2 min read

• Fix "Sorry, you are not allowed to access this page" in WordPress

  Seeing "Sorry, you are not allowed to access this page" in wp-admin? Learn the causes, from lost admin roles and table prefix mismatches to plugins, and how to regain access.

  IntermediateWordPress on cPanel hosting2 min read

• WordPress update failed: "Could not create directory" and other update errors

  Plugin, theme or core updates failing with "Could not create directory", "Destination folder already exists" or "Download failed"? Here is what each error means and how to fix it.

  IntermediateWordPress on cPanel hosting2 min read

• How to fix ERR_CONNECTION_RESET

  ERR_CONNECTION_RESET means the connection was cut off mid-way. Find out how firewalls, proxies, MTU problems and server limits cause it, and the fixes for visitors and site owners.

  BeginnercPanel hosting2 min read

• How to fix ERR_CONNECTION_REFUSED

  ERR_CONNECTION_REFUSED means your browser reached the server address but nothing accepted the connection. Learn how to tell a local problem from a server one and fix it.

  BeginnercPanel hosting2 min read

• AutoSSL not working in cPanel: causes and fixes

  AutoSSL failing to issue or renew a certificate? Learn how to read the AutoSSL log, fix DNS and validation problems, Cloudflare and .htaccess blocks, and CAA records.

  IntermediatecPanel hosting2 min read

• How to fix Cloudflare Error 523: Origin is unreachable

  Cloudflare Error 523 means Cloudflare cannot find a route to your origin server. Usually the DNS record points to a wrong or old IP. Here is how to find and fix it.

  IntermediatecPanel hosting2 min read

Browse by topic

• Getting startedYour first hour with a new server: access, logins and basics.83 guides
• cPanelFiles, databases, email, domains and every cPanel tool, step by step.67 guides
• WHM & resellingWHM, packages, reseller accounts, WHMReseller and running a hosting brand.53 guides
• WordPressInstall, secure, speed up, migrate and fix WordPress sites.49 guides
• Email & webmailMailboxes, webmail, forwarders, spam filters and email delivery.67 guides
• DomainsRegistering, transferring and managing domains and nameservers.27 guides
• SSL certificatesFree AutoSSL, Let's Encrypt, paid certificates and HTTPS.41 guides
• CloudLinuxCloudLinux setup and use: LVE limits, CloudLinux Manager, CageFS and PHP/Node.js selectors.31 guides
• LiteSpeedLiteSpeed Web Server, LSCache and the LiteSpeed Cache plugin: install, settings and tuning.35 guides
• Imunify360Malware scanning, firewall and proactive defence with Imunify360.24 guides
• SoftaculousInstall, update, clone and back up apps with Softaculous.24 guides
• WP SquaredcPanel's WordPress platform: sites, plugins, staging and backups.9 guides
• SitePadBuild and publish websites with the SitePad builder.9 guides
• SitejetDesign, edit and publish sites with the Sitejet builder.9 guides
• WHMResellerAlpha and master resellers with WHMReseller: install, setup and use.12 guides
• VirtFusionInstall, set up and manage VirtFusion: hypervisors, packages, servers and WHMCS integration.28 guides
• VirtualizorManage your VPS with Virtualizor: power, OS reinstall, VNC, IPs and backups.44 guides
• PleskWebsites, email, databases and settings in the Plesk panel.53 guides
• DirectAdminUsers, domains, email and reseller tools in DirectAdmin.41 guides
• WHMCSBilling, automation, products and client management with WHMCS.52 guides
• Control panelscPanel & WHM, Plesk, DirectAdmin and other panels on your VPS.107 guides
• SecurityKeys, passwords, firewalls and keeping a server patched.138 guides
• Networking & DNSIP addresses, reverse DNS, ports and traffic.72 guides
• Websites & appsWeb servers, WordPress, PHP, Node.js, SSL and app hosting.83 guides
• DatabasesMySQL, MariaDB, PostgreSQL, Redis and MongoDB on a VPS.80 guides
• Billing & accountInvoices, renewals, the client area and your account.9 guides
• TroubleshootingWhen something is not working: checks and fixes.127 guides
• Linux VPSSSH, packages, services and everyday Linux administration.265 guides
• Windows VPS & RDPRemote Desktop, Windows Server settings and Admin RDP tips.73 guides
• Docker & DevOpsContainers, Git deploys, automation, monitoring and backups.82 guides