Guides tagged “troubleshooting”
Step-by-step MdmHost guides about troubleshooting, sorted A-Z.
178 guides · page 9 of 9
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Fix common server-side Softaculous problems as root: invalid licence, Softaculous missing in cPanel, outdated script lists, failed installs and stuck auto-upgrades.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.
VirtFusion troubleshooting: fix common errors on servers and hypervisors
Diagnose the most common VirtFusion problems: offline hypervisors, stuck builds, VPSs without network, failed WHMCS provisioning, broken VNC and panel login issues.
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.
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.
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.
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.
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 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.
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.
WordPress stuck in maintenance mode: how to fix it
Is your site showing "Briefly unavailable for scheduled maintenance" after an update? Learn why WordPress gets stuck in maintenance mode and how to fix it in a minute.
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.
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- 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
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