Guides tagged “troubleshooting”
Step-by-step MdmHost guides about troubleshooting, sorted A-Z.
80 guides · page 4 of 4
Plesk website not loading? A step-by-step troubleshooting checklist
Work through DNS, SSL, hosting settings, PHP, logs, suspended subscriptions and server services to find why a website hosted on Plesk is down or showing errors.
Read the error log and raw access logs in cPanel
Find the cause of website errors with cPanel's Errors tool, PHP error_log files and Raw Access logs, and learn how to read common log lines.
Read website logs and statistics in DirectAdmin
View access and error logs, bandwidth and disk usage, and AWStats or Webalizer statistics in DirectAdmin, and use them to find errors, bots and traffic spikes.
Server not responding? First checks before contacting support
A short checklist for an unreachable server: check its status in your VPS provider's control panel, test the network and port, look through the browser console, restart if needed and test from another network before opening a ticket.
Start, stop, restart and power off a VPS in Virtualizor
Understand the difference between Stop, Restart and Power Off in Virtualizor, when to use each, and what to do when a VPS will not start or is stuck.
Troubleshoot .htaccess problems: 500 errors, loops and ignored rules
Find and fix broken .htaccess files on cPanel and LiteSpeed hosting: syntax 500 errors, redirect loops, rules that do nothing and conflicts between plugins.
Troubleshoot MTU problems: hanging pages, stuck SSH and slow VPNs
Recognise MTU and fragmentation problems, find the right MTU with ping, and fix it on Linux, Windows, WireGuard and Docker networks.
Troubleshoot Node.js apps in cPanel (CloudLinux Node.js Selector)
Fix common Node.js Selector problems in cPanel: app not starting, 503 errors, npm install failures, wrong Node version, missing modules and memory limit errors.
Troubleshoot Softaculous on WHM: licence, missing scripts and failed installs (root)
Fix common server-side Softaculous problems as root: invalid licence, Softaculous missing in cPanel, outdated script lists, failed installs and stuck auto-upgrades.
Troubleshoot WHMCS with System Health and logs
Use WHMCS System Health, the Activity, Module, Gateway, Email and Ticket Import logs, and safe debug settings to find out why something in WHMCS is not working.
Use WHM Mail Delivery Reports to trace email for all your accounts
Find out why messages bounced or were rejected across all your customers' accounts with WHM Mail Delivery Reports: filters, reading results and fixing common failures.
VPS has no network or internet? Troubleshooting on Virtualizor
Diagnose a Virtualizor VPS that is online but unreachable: check status and IPs in the panel, test from VNC, fix interface, gateway, DNS and firewall problems.
Website down? A step-by-step troubleshooting checklist
A calm, ordered checklist for when your website stops loading: is it just you, domain and DNS, SSL, error codes, resource limits, disk space and recent changes.
Website error codes explained: 403, 404, 500, 502, 503 and 504
What each common HTTP error code means, the usual cause on cPanel hosting or a VPS, and the first thing to check to get your website back online.
WHMCS cron not running: how to find and fix the problem
Diagnose why the WHMCS cron is not running or failing: check System Health, run cron.php manually, fix PHP binary, ionCube, paths, memory and locked tasks.
WHMReseller troubleshooting: common errors for master and alpha resellers
Fix common WHMReseller problems: plugin missing, cannot create resellers, limits not applying, sub-reseller accounts not visible, suspension gaps and licence errors.
Why is my VPS slow? Performance troubleshooting on Virtualizor
Find the cause of a slow VPS: compare Virtualizor graphs with top, check CPU steal, I/O wait, memory and swap, disk space and network, then fix or upgrade.
Why is my website slow? Troubleshooting on cPanel hosting
A step-by-step checklist to find why a site on cPanel hosting is slow: measure first, then check caching, resource limits, PHP version, database, bots and heavy pages.
WordPress site down? A step-by-step checklist
Work out why a WordPress site is offline: check if it is down for everyone, domain and DNS, SSL, hosting account status, resource limits, PHP errors and the database.
WordPress Site Health explained: fix the common warnings
Understand WordPress Site Health status and info: what each common critical issue and recommendation means on cPanel hosting, and how to fix or safely ignore it.
Browse by topic
- Getting startedYour first hour with a new server: access, logins and basics.69 guides
- cPanelFiles, databases, email, domains and every cPanel tool, step by step.37 guides
- WHM & resellingWHM, packages, reseller accounts, WHMReseller and running a hosting brand.49 guides
- WordPressInstall, secure, speed up, migrate and fix WordPress sites.40 guides
- Email & webmailMailboxes, webmail, forwarders, spam filters and email delivery.37 guides
- DomainsRegistering, transferring and managing domains and nameservers.20 guides
- SSL certificatesFree AutoSSL, Let's Encrypt, paid certificates and HTTPS.19 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.30 guides
- Imunify360Malware scanning, firewall and proactive defence with Imunify360.23 guides
- SoftaculousInstall, update, clone and back up apps with Softaculous.23 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.7 guides
- VirtualizorManage your VPS with Virtualizor: power, OS reinstall, VNC, IPs and backups.30 guides
- PleskWebsites, email, databases and settings in the Plesk panel.52 guides
- DirectAdminUsers, domains, email and reseller tools in DirectAdmin.40 guides
- WHMCSBilling, automation, products and client management with WHMCS.51 guides
- Control panelscPanel & WHM, Plesk, DirectAdmin and other panels on your VPS.106 guides
- SecurityKeys, passwords, firewalls and keeping a server patched.115 guides
- Networking & DNSIP addresses, reverse DNS, ports and traffic.34 guides
- Websites & appsWeb servers, WordPress, PHP, Node.js, SSL and app hosting.52 guides
- DatabasesMySQL, MariaDB, PostgreSQL, Redis and MongoDB on a VPS.64 guides
- Billing & accountInvoices, renewals, the client area and your account.9 guides
- TroubleshootingWhen something is not working: checks and fixes.68 guides
- Linux VPSSSH, packages, services and everyday Linux administration.70 guides
- Windows VPS & RDPRemote Desktop, Windows Server settings and Admin RDP tips.58 guides
- Docker & DevOpsContainers, Git deploys, automation, monitoring and backups.58 guides
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