Backup Recovery

Common Problems 116969

Ubuntu 22.04 LTS – UFW is enabled but expected rules are not applied

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 22.04 LTS Ubuntu 22.04 Ubuntu 22.04.4 📖 ~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 114977

Kernel Updates Installed but Old Kernel Keeps Booting

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 📖 ~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 124044

Oracle Linux 10 – chronyd reports unsynchronised time causing Kerberos auth failures

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Oracle Linux 10 📖 ~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 113476

Windows Server 2012 R2 – Endpoint filter driver deadlock blocks file and network I/O – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 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 116473

Ubuntu 24.04 LTS – cloud-init stalls while waiting for unavailable datasource

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 24.04 LTS Ubuntu 24.04 Ubuntu 24.04.1 📖 ~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 118999

Ubuntu 14.04 LTS – SSH connection refused after security hardening

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 14.04 LTS Ubuntu 14.04 Ubuntu 14.04.6 📖 ~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 120548

Debian 11 – systemd service remains in activating state after reboot

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Debian 11 📖 ~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 112468

Windows Server 2019 — Post-Update Boot Loop Triggered by Incompatible Storage Driver — 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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Common Problems 112961

Windows Server 2016 — Post-Update Boot Loop Triggered by Incompatible Storage Driver — Fix & Prevention

🟠 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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Common Problems 113468

Windows Server 2012 R2 — Post-Update Boot Loop Triggered by Incompatible Storage Driver — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 May 2026 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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