August 2020

Common Problems 113534

Windows Server 2016 – Hyper-V virtual switch loses uplink after NIC driver update – Fix & Prevention (FIX-PREVENTION-2)

🟠 High   ⏱ 5–30 min  Last verified: 18 May 2026 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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Ubuntu 20.04 — spice-vdagent — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — spice-vdagent — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4617-1 Related CVEs: CVE-2020-25650 CVE-2020-25651 CVE-2020-25652 CVE-2020-25653 Upstream summary: Matthias Gerstner discovered that SPICE vdagent incorrectly handled the active_xfers hash table. A local attacker could possibly use this issue to […]

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Common Problems 112578

Windows Server 2019 — Defender Platform Update Fails and Signatures Stop Updating — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 May 2026 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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Spring DataSource JNDI with Tomcat Example — step-by-step DevOps tutorial on Progressive Robot

Spring DataSource JNDI with Tomcat Example

URL: https://www.progressiverobot.com/spring-datasource-jndi-with-tomcat-example/ Welcome to the Spring DataSource JNDI Tomcat Example Tutorial. Earlier we saw how to implement database operations using [Spring JDBC](/community/tutorials/spring-jdbc-example "Spring JDBC and JdbcTemplate CRUD with DataSource Example Tutorial") integration. However most of the time enterprise applications are deployed in a servlet container such as Tomcat, JBoss etc. Spring DataSource We know that […]

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Python shape() method - All you need to know! — step-by-step Python tutorial on Progressive Robot

Python shape() method – All you need to know!

URL: https://www.progressiverobot.com/python-shape-method/ Hello, readers! This article talks about the Python shape() method and its variants in programming with examples. So, let us begin!! Use of Python shape() method When it comes to the analysis of data and its variants, it is extremely important to realize the volume of data. That is, before we plan to […]

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How to Set Up a Firewall with firewalld on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up a Firewall with firewalld on SLES 12

Introduction This tutorial covers How to Set Up a Firewall with firewalld 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 […]

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Python Keywords and Identifiers (Updated) — step-by-step Python tutorial on Progressive Robot

Python Keywords and Identifiers (Updated)

URL: https://www.progressiverobot.com/python-keywords-identifiers/ Let's talk about Python keywords and identifiers. We recently also covered a complete tutorial on installing and setting up Python for beginners in this [Python tutorial](/community/tutorials/python-tutorial-beginners). Python Keywords Well simply, Python keywords are the words that are reserved. That means you can't use them as name of any entities like variables, classes and […]

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Java Catch Multiple Exceptions, Rethrow Exception — step-by-step Programming tutorial on Progressive Robot

Java Catch Multiple Exceptions, Rethrow Exception

URL: https://www.progressiverobot.com/java-catch-multiple-exceptions-rethrow-exception/ In Java 7, catch block has been improved to handle multiple exceptions in a single catch block. If you are catching multiple exceptions and they have similar code, then using this feature will reduce code duplication. Let's understand java catch multiple exceptions feature with an example. Java catch multiple exceptions ![java catch multiple […]

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