220-1102 Software Troubleshooting Practice Question

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 .dll file is not registered in the Windows Registry

  Why this is correct

  When a 32-bit application relies on Component Object Model (COM) components, its DLLs must have registration entries in the Windows Registry, typically under HKEY_CLASSES_ROOT\CLSID. A Windows Update can overwrite or remove these keys without deleting the DLL file itself, causing the application to fail at startup with a generic error or no message at all because the required COM objects cannot be instantiated. The proper fix is to run `regsvr32` from an elevated Command Prompt to re-create the registration entries and restore the application's ability to load its dependencies.

• ✗

  The application is blocked by Windows Defender

  Why it's wrong here

  If Windows Defender were the cause of the startup failure, the system would generate a notification in Windows Security and record an event ID 1116 (malware detected) or 1117 (action taken) in the Defender operational log, and the malicious DLL would likely be quarantined or removed. Since the DLL is present and there are no security alerts or event log entries, a Defender block is not consistent with the observed behavior. Enterprise-wide Defender exclusions or SmartScreen blocks also produce a 'Windows protected your PC' dialog, which contrasts with a silent failure to start.

• ✗

  The .dll file requires a 64-bit version on a 64-bit system

  Why it's wrong here

  On 64-bit Windows, a 32-bit application uses DLLs from SysWOW64, while System32 contains 64-bit libraries; the WOW64 layer redirects automatic calls. If an incorrect architecture DLL were loaded, Windows would raise a specific 'not a valid Win32 application' or 'The application was unable to start correctly (0x000007cb)' error, not a silent failure. Because the DLL file is present and the failure is a no-launch condition, a 32-bit/64-bit mismatch is not the root cause, and re-registering the existing 32-bit DLL is the relevant fix.

• ✗

  The user does not have administrative privileges

  Why it's wrong here

  Lacking administrative privileges generally produces 'Access is denied' messages or UAC elevation prompts when a program attempts to write to protected locations or execute privileged operations. The user was able to install the application previously, which itself requires administrative rights, so the account clearly has the necessary permissions. A failure to start with no error dialog does not align with a permission problem; DLL registration state is a far more likely explanation than account privileges.

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