Backup Recovery

Common Problems 113616

Windows Server 2012 R2 – Secure Boot blocks legacy unsigned driver at startup – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 29 October 2019 Affected versions: Windows Server 2012 R2 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related […]

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Common Problems 113075

Windows Server 2016 – SMB share and NTFS permission collision causing read-only mounts – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 29 October 2019 Affected versions: Windows Server 2016 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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How to Use sar for System Activity Reporting on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use sar for System Activity Reporting on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use sar for system activity reporting on ibm aix […]

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Common Problems 118105

Ubuntu 18.04 LTS – failed unattended-upgrades leave packages unconfigured

🟠 High   ⏱ 5–30 min  Last verified: 28 October 2019 Affected versions: Ubuntu 18.04 LTS Ubuntu 18.04 Ubuntu 18.04.6 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention […]

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Common Problems 118037

Ubuntu 18.04 Cron Jobs Not Running Due to PAM Account Restrictions

🟡 Medium   ⏱ 5–30 min  Last verified: 28 October 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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Common Problems 113020

Windows Server 2016 — Domain services fail when IPv6 is disabled — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 28 October 2019 Affected versions: Windows Server 2016 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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Common Problems 112469

Windows Server 2019 — Rogue DHCP server issues incorrect gateway and DNS options — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 October 2019 Affected versions: Windows Server 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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Common Problems 114976

RHEL 8 chronyd Clock Drift Causes TLS And Kerberos Failures

🟡 Medium   ⏱ 5–30 min  Last verified: 27 October 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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How to Use Python Virtual Environments on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Use Python Virtual Environments on FreeBSD 12

Introduction This guide explains how to Use Python Virtual Environments on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained […]

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How to Harden PHP on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Harden PHP on RHEL 8

PHP runs on millions of web servers, but a default installation leaves many dangerous settings enabled that attackers can exploit. On RHEL 8, hardening PHP through /etc/php.ini is one of the most impactful steps you can take to protect your application without touching a single line of code. This tutorial covers the most important security-oriented […]

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