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Common Problems 113568

Windows Server 2012 R2 — Windows Update Client reports package conflict between LCU and out-of-band fix — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 11 April 2023 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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How to Configure Apache with mod_pagespeed on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure Apache with mod_pagespeed on SLES 12

Introduction This tutorial covers How to Configure Apache with mod_pagespeed on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper […]

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Common Problems 112457

Windows Server 2019 – MPIO path failover stalls due to HBA driver defects – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 11 April 2023 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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FreeBSD 12 — cyrus-sasl-sql — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — cyrus-sasl-sql — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 April 2023 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: cyrus-sasl — Escape password for SQL insert/update commands Related CVEs: CVE-2022-24407 Upstream summary: Cyrus SASL 2.1.x Release Notes New in 2.1.28 reports: Escape password for SQL insert/update commands. Table of […]

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Amazon Linux 2 — log4j — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — log4j — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2022-1750 Related CVEs: CVE-2022-23302 CVE-2022-23305 CVE-2022-23307 CVE-2017-5645 CVE-2019-17571 CVE-2021-4104 CVE-2021-44228 Upstream summary: A flaw was found in the Java logging library Apache Log4j in version 1.x. JMSSink in Log4j 1.x […]

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Common Problems 111883

Windows Server 2022 – RDP session host hits max sessions unexpectedly – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 11 April 2023 Affected versions: Windows Server 2022 📖 ~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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Ubuntu 22.04 — apparmor — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — apparmor — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 April 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7035-1 Related CVEs: CVE-2016-1585 https://bugs.launchpad.net/apparmor/+bug/1597017 Upstream summary: It was discovered that the AppArmor policy compiler incorrectly generated looser restrictions than expected for rules allowing mount operations. A local attacker could […]

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The unique() function in R programming — step-by-step DevOps tutorial on Progressive Robot

The unique() function in R programming

URL: https://www.progressiverobot.com/unique-function-r-programming/ The unique() function in R is used to eliminate or delete the duplicate values or the rows present in the vector, [data frame](/community/tutorials/data-frames-in-r-programming), or [matrix](/community/tutorials/matrix-operations-in-r) as well. The unique() function found its importance in the EDA (Exploratory Data Analysis) as it directly identifies and eliminates the duplicate values in the data. In this […]

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Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide (ELSA-2023-6191)

🟠 High   ⏱ 15–60 min  Last verified: 11 April 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6191 Related CVEs: CVE-2023-5721 CVE-2023-5730 CVE-2023-5725 CVE-2023-5728 CVE-2023-5732 CVE-2023-44488 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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How to Install Nexus Repository on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Install Nexus Repository on Oracle Linux 9

Introduction Oracle Linux 9 ships with a stable, security-hardened base that makes deploying install nexus repository on oracle linux 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Nexus Repository on Oracle Linux 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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