Articles about server | UserComp.com

Closing Microsoft Edge Without Admin Rights: A Workaround for Terminal Server Users

Resolve unresponsive Microsoft Edge instances on Terminal Servers without admin rights by terminating user-owned processes via Task Manager or taskkill.

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Forwarding TCP Requests with VPN: A Simple Guide for Server, Laptop, and Raspberry Pi

Resolve TCP forwarding failures by configuring WireGuard or OpenVPN with correct firewall and DNAT rules for secure remote access.

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Rebuilding Windows Server 2019 Boot after Power Failure on Motherboard with RAID10

Fixes Windows Server 2019 boot failure after power loss on RAID10 by rebuilding the BCD store with bcdboot.

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Troubleshooting Self-Hosted Website Connectivity Issues

Resolve self-hosted website connectivity failures by verifying public IP stability, testing local access, and configuring correct port forwarding rules.

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Ubuntu Server 22.04 Unreachable via SSH After Time: A Troubleshooting Guide

Resolve Ubuntu Server 22.04 SSH disconnections caused by NAT timeouts and firewall state expirations by configuring client keep-alives and verifying network persistence.

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How to configure iptables to allow OpenVPN clients to access internet via the server, if it's run under OpenVZ?

Configure iptables NAT and IP forwarding on the OpenVZ host to allow OpenVPN clients to access the internet.

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Why I Can't Access My Web Service on Port 80

Resolve web service inaccessibility on port 80 by fixing IIS bindings, Windows Firewall rules, and router port forwarding.

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Name Server Troubleshooting: A Comprehensive Guide

Resolve domain name resolution failures by verifying authoritative records, checking DNS propagation status, and diagnosing local resolver misconfigurations.

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Windows 10 ISO Not Booting on Dell PowerEdge R630 with 2x Intel Xeon E5-2690v4 - Virtual Console

Resolve Windows 10 ISO boot failure on Dell PowerEdge R630 by mounting virtual media via iDRAC and matching BIOS boot mode.

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Importing Server Information from WinScp to Mobaxterm

Migrate server connection details from WinSCP to MobaXterm by exporting sessions as INI files and importing them via PuTTY registry entries.

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Can't Ping AWS Site-to-Site VPN Windows Server Customer Gateway: Troubleshooting Guide

Resolve AWS Site-to-Site VPN connectivity issues by verifying tunnel status and configuring security groups to allow traffic between on-premises networks and VPC instances.

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Custom DNS Record Includes Port Number: A Solution for IoT Server Multiples Services

Resolve IoT service access by using a reverse proxy to map distinct subdomains to internal ports instead of embedding port numbers in DNS records.

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Docker Compose: Mailserver Service Not Starting

Resolve Docker Compose mailserver startup failures caused by permission errors, missing environment variables, or network conflicts.

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IIS Server Redirects to Offline Server: How to Fix Error Code 500302

Resolve custom error 500302 by identifying the originating application and checking Windows Event Viewer logs instead of treating it as a standard IIS fault.

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Automatically Deleted Postfix Emails: Ubuntu Server Troubleshooting

Resolve missing Postfix emails on Ubuntu by diagnosing Dovecot Sieve scripts, spam quarantine policies, and mail spool permissions.

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Setting up a Hyper-V Ubuntu Server with Hestia CP on Windows 10

Deploy Hestia Control Panel on an Ubuntu Server virtual machine in Hyper-V to manage web hosting and databases efficiently.

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Fault Detected on Drive 0 in Disk Drive Bay 1

Resolve the Fault Detected on Drive 0 in Disk Drive Bay 1 error by diagnosing PERC controller issues, reseating hardware, and updating firmware.

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VB.NET Application: Selective TLS Connection Fail with Remote Server

Resolve VB.NET selective TLS failures by explicitly enabling TLS 1.2 and 1.3 via ServicePointManager.SecurityProtocol to ensure compatibility with modern remote servers.

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Troubleshooting: Unable to Reach Website After Downloading File During Windows Server Upgrade

Resolve website unreachability after Windows Server upgrade by verifying IIS service status, checking firewall rules, and analyzing event logs.

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Unable to find matches in SQL-Server generated script on WSL

Resolve grep search failures in SQL Server scripts on WSL by converting Windows CRLF line endings to Unix LF format using dos2unix or editor settings.

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Prioritizing One Domain Name Over Others: An RDNS Perspective

Configure the default virtual host to route unmatched requests to a specific domain.

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NGINX Server Failing to Handle Certain Number of New Connections on Ubuntu VM

Resolve NGINX connection failures on Ubuntu by increasing file descriptor limits and kernel network parameters to prevent resource exhaustion.

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Understanding Web Server Port 80 and NAT Port Translation for Tech Support

Resolve connectivity issues by verifying port 80 binding and NAT table mappings for outbound HTTP traffic.

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Program won't connect through OpenVPN

Resolve macOS OpenVPN connection failures caused by DNS leaks, incorrect routing, or firewall blocks.

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Decline all URIs with tilde character in Nginx

Block URIs containing a tilde character in Nginx to prevent security risks and reduce backend load.

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Windows Server 2022 VPN Setup Hell: Can't Connect Windows 11 Client

Resolve Windows Server 2022 VPN connection failures on Windows 11 clients by fixing RAS, authentication, and firewall misconfigurations.

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Windows Server 2019: SSH Server Max Number of Connections or Concurrent Users

Resolve Windows Server 2019 SSH connection refusals by identifying resource exhaustion or firewall issues instead of searching for non-existent configuration limits.

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Understanding the 'listen()' Call and 3-Way Handshake in TCP Server Debugging

Resolve TCP server hangs before accept by diagnosing incomplete 3-way handshakes using listen backlog tuning and tcpdump analysis.

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How to Configure Nginx to Serve a Docker Container on Localhost

Configure Nginx as a reverse proxy to route localhost traffic to a Docker container using a shared network and server block.

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Installing AnyDesk on Ubuntu Server 24.04 for Session-Based RDP Connections

Resolve the inability to establish simultaneous multi-user RDP sessions on Ubuntu Server 24.04 by installing and configuring xrdp as a native alternative to AnyDesk.

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Rebooting DNS Server in Docker Container: A Step-by-Step Guide

Resolve stuck cache entries and network errors by gracefully restarting the Technitium DNS Server Docker container.

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Postfix: Deleting Old Emails on a VPS with Ubuntu and POP

Automate deletion of emails older than a specified threshold from all user mailboxes on an Ubuntu VPS using Dovecot and cron scripts.

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Postfix Mail Server Installation Fails to Send Emails to Gmail, Works with ProtonMail: TLS Issue Solution

Fix Postfix TLS certificate verification failures when sending to Gmail by updating the system CA bundle and ensuring hostname matches the SSL certificate.

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Troubleshooting Windows Server: Configured IIS IP 127.0.0.1 and ADAudit Plus Showing Admin Account Login Failures

Resolve ADAudit Plus admin login failures by verifying network connectivity, opening firewall ports for WMI and RPC, and ensuring service account permissions.

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Java SMTP Server ClassNotFoundException

Resolve Java ClassNotFoundException for SMTP servers by adding the jakarta.mail dependency to Maven or Gradle build files.

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Moving Windows 11 Storage Spaces to Windows Server 2022 Storage Pools

Resolves the inability to directly migrate Windows 11 Storage Spaces to Windows Server 2022 by outlining a manual backup and rebuild process.

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Why is my domain URL still rendering a 404 page after uninstalling nginx?

Resolve persistent 404 errors after uninstalling nginx by stopping the service, purging configuration files, and ensuring Apache binds to port 80.

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Cannot Turn on Network Discovery for Windows Server 2016 VM Sharing a Folder

Resolve Windows Server 2016 VM invisibility on the local network by enabling required discovery services and configuring firewall rules for file sharing.

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Recommended by Kitchen Faucet: A Guide to Home Server Setup

Resolve home server setup issues including PoE splitter connectivity, faulty USB port diagnostics, and static IP assignment for reliable network operation.

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Changing port in Apache httpd.conf listen not working

Resolve Apache failing to bind to a new port by checking for conflicts, updating firewall rules, and configuring SELinux contexts.

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Windows 10: Creating a Samba Server on Ubuntu and Accessing It from File Explorer

Resolve Windows 10 File Explorer access issues to Ubuntu Samba shares by configuring smb.conf, creating Samba users, and allowing firewall traffic.

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Supermicro Server: Added Memory Upgrade Not Showing Expected

Resolve Supermicro server failing to detect new 16GB or 32GB memory upgrades by verifying physical seating, DIMM population rules, and BIOS compatibility.

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How to Restrict RDP and VPN Users/Connections on Windows Server 2022

Restrict RDP and VPN access on Windows Server 2022 by configuring firewall scopes and NPS dial-in permissions to block unauthorized users.

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Docker Container Can't Connect to Outside Oracle Server: A Troubleshooting Guide

Resolve Docker container connectivity failures to external Oracle servers by fixing network isolation, firewall blocks, and TNS configuration errors.

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Unable to SSH into Ubuntu Server: Log in Locally First

Resolve Ubuntu SSH connection failures by logging in locally to install the OpenSSH server, start the service, and configure firewall rules.

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Troubleshooting MapProxy with Windows Servers in Multiple Environments

Resolve MapProxy actively refused errors on Windows by fixing binding addresses, clearing port conflicts, and configuring firewall rules.

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Windows Server Installation with VirtualBox: A Step-by-Step Guide

Resolves Windows Server installation failures in VirtualBox by guiding users through correct VM configuration, ISO attachment, and setup execution.

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How to Manually Close SSH Ports/Bindings on a Mac 15.1 System for Troubleshooting Jump Server Connections

Resolve stuck SSH jump server connections on macOS 15.1 by identifying and terminating lingering background processes using Terminal commands.

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Automate a menu presented by a remote SSH jump server

Automate interactive SSH jump server menus by using the -t flag with echo piping or expect scripts to simulate key presses and bypass manual input prompts.

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Troubleshooting Ansible Installation Failure: Installing IIS Web-Server on VirtualBox Windows Machine

Resolve Ansible installation failures on VirtualBox Windows guests by fixing WinRM configuration and network adapter settings to enable IIS deployment.

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