Question 520 of 750

PC Security Issue Remediation →hardMultiple ChoiceObjective-mapped

Why Antivirus Is Not Updating and How to Fix It

This 220-1202 practice question tests your understanding of pc security issue remediation. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

During a routine check, a technician finds that a user's Windows 10 computer has an outdated antivirus that hasn't updated in 3 months. The user claims they never saw any update prompts. What is the most likely reason and the appropriate remediation?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Clue: "never"
Why it matters: Absolute qualifier. True only if the statement has zero exceptions — be cautious of options that seem obvious but break down in edge cases.

A
The antivirus subscription has expired; renew it
Why wrong: While possible, the question states no prompts were seen; a disabled update service is a common cause that also explains the lack of prompts.
B
The Windows Update service is disabled; re-enable it and set to automatic
If the Windows Update service is disabled, the antivirus cannot receive updates, and the user would not see prompts. Enabling it resolves the issue.
C
The user has manually set the antivirus to manual update mode
Why wrong: Manual mode would still show prompts or notifications; the lack of any prompts points to a service-level issue.
D
The computer is infected with a virus that blocks updates
Why wrong: Infection could block updates, but the technician found no other symptoms; the update service being disabled is a simpler and more common cause.

Full breakdown with real-world context →

Quick Answer

The answer is that the Windows Update service is disabled, and the appropriate remediation is to re-enable it and set its startup type to Automatic. This is the most likely reason because antivirus software relies on the Windows Update service to download and install definition updates; if this service is stopped or set to Manual, the antivirus cannot receive update prompts or automatically refresh its virus definitions, leaving it outdated for months without any user notification. On the CompTIA A+ Core 2 220-1202 exam, this scenario tests your understanding of Windows service dependencies and common misconfigurations that cause security lapses—a frequent trap is assuming the antivirus itself is broken or that the user simply ignored prompts, when the real culprit is a disabled background service. To remember this, think: “No service, no updates—check services.msc first.”

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

The Windows Update service is disabled; re-enable it and set to automatic

The most likely reason the antivirus hasn't updated in 3 months is that the Windows Update service (wuauserv) is disabled. Many Windows 10 antivirus solutions, including Windows Defender, rely on the Windows Update service to download definition updates. If this service is disabled, the antivirus cannot receive updates, and the user would not see update prompts because the update mechanism itself is non-functional. Re-enabling the service and setting it to automatic allows updates to flow normally.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
The antivirus subscription has expired; renew it
Why it's wrong here
While possible, the question states no prompts were seen; a disabled update service is a common cause that also explains the lack of prompts.
✓
The Windows Update service is disabled; re-enable it and set to automatic
Why this is correct
If the Windows Update service is disabled, the antivirus cannot receive updates, and the user would not see prompts. Enabling it resolves the issue.
Clue confirmation
The clue words "most likely", "never" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The user has manually set the antivirus to manual update mode
Why it's wrong here
Manual mode would still show prompts or notifications; the lack of any prompts points to a service-level issue.
✗
The computer is infected with a virus that blocks updates
Why it's wrong here
Infection could block updates, but the technician found no other symptoms; the update service being disabled is a simpler and more common cause.

Common exam traps

Common exam trap: answer the scenario, not the keyword

CompTIA A+ often tests the misconception that antivirus update failures are always due to subscription expiry or infection, when in fact a disabled Windows Update service is a common and overlooked cause, especially in Windows 10 environments where antivirus updates depend on this service.

Trap categories for this question

Command / output trap
Manual mode would still show prompts or notifications; the lack of any prompts points to a service-level issue.

Detailed technical explanation

How to think about this question

The Windows Update service (wuauserv) is a core Windows service that manages the download and installation of updates for Windows and many Microsoft products, including Windows Defender. When this service is disabled, the Background Intelligent Transfer Service (BITS) and the Windows Update Medic Service (WaaSMedicSvc) may also be affected, creating a cascade failure that prevents any update mechanism from functioning. In real-world scenarios, this often occurs after aggressive system optimization or malware removal that inadvertently disables critical services.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.

TExam Day Tips

Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A practitioner preparing for the 220-1202 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this 220-1202 question test?

PC Security Issue Remediation — This question tests PC Security Issue Remediation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The Windows Update service is disabled; re-enable it and set to automatic — The most likely reason the antivirus hasn't updated in 3 months is that the Windows Update service (wuauserv) is disabled. Many Windows 10 antivirus solutions, including Windows Defender, rely on the Windows Update service to download definition updates. If this service is disabled, the antivirus cannot receive updates, and the user would not see update prompts because the update mechanism itself is non-functional. Re-enabling the service and setting it to automatic allows updates to flow normally.

What should I do if I get this 220-1202 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "most likely", "never". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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