MD-102 Manage applications Practice Question
You manage Windows 11 devices with Microsoft Intune. A Win32 app deployed as Required is failing on a subset of devices, and the Intune Management Extension log shows the installer exiting with code 1618. You have already confirmed the app package and detection rule are correct. What is the most likely cause and the appropriate fix?
⚠ Common exam trap
The trap here is assuming 1618 indicates a reboot requirement, when reboot codes are 3010 and 1641 and 1618 actually signals an installer mutex conflict.
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
✓
Another installation is already in progress; adjust the app's dependencies or deployment timing so installs do not overlap.
Exit code 1618 from Windows Installer means another installation is already running on the device. When several Required Win32 apps deploy at once, their installers contend for the single Windows Installer mutex, and the losing installer returns 1618. Sequencing dependencies or staggering deployment timing lets each installer run without contention, so the affected devices complete installation.
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 app requires a reboot that was not granted; map return code 1618 to a soft reboot so the device restarts.
Why it's wrong here
1618 is not a reboot-required code; the reboot codes are 3010 and 1641. Mapping 1618 to a soft reboot would hide the real failure and leave the app uninstalled. The correct treatment for a reboot code is different from resolving a concurrent-installation conflict, so this mapping would misdiagnose the problem.
- ✗
The install command is running in the user context and lacks elevation; switch Install behavior to System.
Why it's wrong here
A user-context privilege problem typically produces access-denied or elevation errors rather than 1618. The specific code 1618 means another installation holds the Windows Installer mutex, regardless of context. Changing install behavior might be appropriate for other failures, but it does not address a concurrent installer conflict.
- ✗
The detection rule is matching too early; add a longer detection script timeout so the installer finishes first.
Why it's wrong here
Detection timing does not produce exit code 1618, which originates from the Windows Installer engine rather than from Intune's detection evaluation. Detection scripts run after the install command completes, so a timeout change would not alter the installer's exit code. The log evidence points to a Windows Installer concurrency issue, not a detection mismatch.
- ✓
Another installation is already in progress; adjust the app's dependencies or deployment timing so installs do not overlap.
Why this is correct
Exit code 1618 is the Windows Installer error indicating another installation is already in progress. When multiple Required apps install simultaneously, the Windows Installer mutex blocks the second installer. Staggering deployments, sequencing dependencies, or reducing concurrent Required apps on those devices resolves the conflict so each installer can acquire the mutex and complete.
Go deeper
Related to this question
Learn chapter
Implementing Windows Autopilot
Key term
Microsoft Intune
Microsoft Intune is a cloud-based service that helps organizations manage employee devices, apps, and security policies without needing to own or control the physical hardware.
Key term
Intune
Microsoft Intune is a cloud-based service that helps organizations manage their users' devices and applications, ensuring security and compliance without needing to own or control the physical hardware.
About these practice questions
Courseiva writes every MD-102 question from scratch — 556 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Microsoft exam blueprint
This MD-102 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MD-102 exam.