Installer.exe - Download and Fix EXE Errors

Last Updated: 06/30/2022
[Time to Read: ~3-5 minutes]

BitDefender Update Installer files such as installer.exe utilize the EXE file extension. This file is considered a Win64 EXE (Dynamic link library) file, and was first created by Bitdefender for the Bitdefender Security software package.

The first version of installer.exe for Avira Free Antivirus 15.0.1909.1591 was seen on 09/25/2019 in Windows 10. The newest file release date for BitDefender was 12/03/2018 [version]. Installer.exe is found in BitDefender, Nokia Suite 3.8.48, and Clip Extractor 5.11.

Below, you find comprehensive file information, instructions for simple EXE file troubleshooting, and list of free installer.exe downloads for each available file version.

File Analysis Provided by Jason Geater (Author)

Recommended Download: Fix installer.exe / BitDefender-related registry issues with WinThruster.

Compatible with Windows 10, 8, 7, Vista, XP and 2000

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File Overview

General Information
File Name: installer.exe
File Extension: EXE file extension
Description: BitDefender Update Installer
Object File Type: Dynamic link library
File Operating System: Windows NT 32-bit
MIME Type: application/octet-stream
User Popularity Rating:
Developer and Software Information
Software Developer: Bitdefender
Software Program: Bitdefender Security
Legal Copyright: @ Bitdefender
File Details
Character Set: Unicode
Language Code: English (U.S.)
File Flags: (none)
File Flags Mask: 0x003f
Entry Point: 0x1d594
Code Size: 267264

What are installer.exe Error Messages?

installer.exe Runtime Errors

Runtime errors are BitDefender errors that occur during "runtime". Runtime is pretty self-explanatory; it means that these EXE errors are triggered when installer.exe is attempted to be loaded either when BitDefender is starting up, or in some cases already running. Runtime errors are the most common form of EXE error you will encounter using BitDefender.

In most cases, installer.exe runtime errors occurring while the program is running will result in the program terminating abnormally. Most of these installer.exe error messages mean that BitDefender was either unable to locate this file on startup, or the file is corrupt, resulting in a prematurely-aborted startup process. Generally, BitDefender will be unable to start without resolving these errors.

Some of the most common installer.exe errors include:

  • installer.exe - Bad Image.
  • installer.exe Application Error.
  • installer.exe could not be found.
  • installer.exe could not be installed.
  • installer.exe could not be launched. Class not registered.
  • installer.exe could not be started.
  • installer.exe failed to initialize properly.
  • installer.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
  • installer.exe is not a valid Win32 application.
  • installer.exe is not running.
  • Cannot find installer.exe.
  • Error starting program: installer.exe.
  • Faulting Application Path: installer.exe.
  • The file installer.exe is missing or corrupt.
  • Windows failed to start - installer.exe.
System Error

The program can’t start because installer.exe is missing from your computer. Try reinstalling the program to fix this problem.

Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

Finding the source of the installer.exe error is key to properly resolving these errors. Although most of these EXE errors affecting installer.exe will happen during startup, occasionally you will encounter a runtime error while using Bitdefender Security. This can occur due to poor programming on behalf of Bitdefender, conflicts with other software or 3rd-party plug-ins, or caused by damaged and outdated hardware. Also, these types of installer.exe errors can occur if it has been accidentally moved, deleted, or corrupted by a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

How to Fix installer.exe Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your installer.exe issue. These troubleshooting steps are listed in the recommended order of execution.

Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. When you see the search box, type "System Restore" and press "ENTER".
  3. In the search results, find and click System Restore.
  4. Please enter the administrator password (if applicable / prompted).
  5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
  6. Restore your computer to that backup image.

If the Step 1 fails to resolve the installer.exe error, please proceed to the Step 2 below.

Step 2: If recently installed BitDefender (or related software), uninstall then try reinstalling BitDefender software.

You can uninstall BitDefender software by following these instructions (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "Uninstall" and press "ENTER".
  3. In the search results, find and click "Add or Remove Programs"
  4. Find the entry for BitDefender and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall BitDefender software.

If this Step 2 fails as well, please proceed to the Step 3 below.



Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many installer.exe error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

  1. Hit the Windows Start button
  2. In the search box, type "Update" and press "ENTER".
  3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
  4. If updates are available for download, click "Install Updates".
  5. After the update is completed, restart your PC.

If Windows Update failed to resolve the installer.exe error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

If Those Steps Fail: Download and Replace Your installer.exe File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate installer.exe file version. We maintain a comprehensive database of 100% malware-free installer.exe files for every applicable version of BitDefender. Please follow the steps below to download and properly replace you file:

  1. Locate your Windows operating system version in the list of below "Download installer.exe Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate BitDefender folder location:
    Windows 10: C:\Users\Tester\AppData\Local\Temp\7zSC7FD4D5A\
    Windows 10: C:\Program Files (x86)\Auto Updater\
    Windows 10: C:\Program Files (x86)\Clip Extractor\
    Windows 10: C:\ProgramData\NokiaInstallerCache\ProductCache\{D5878294-C113-43c5-A24F-FC333C52015A}\{EDB188F5-D8E8-42EE-89E0-F212DA48CB81}\
    Windows 10: C:\Users\Tester\AppData\Local\Programs\Opera\64.0.3417.54\
    Show 4 more directories +
    Windows 10: C:\Users\Tester\AppData\Local\Programs\Opera\63.0.3368.94\
    Windows 10: C:\Program Files\Bitdefender Agent\installer\
    Windows 10: C:\Program Files (x86)\Technitium\TMACv6.0\
    Windows 10: C:\Program Files\Bitdefender Antivirus Free\installer\
  4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve installer.exe problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

Download installer.exe Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying installer.exe to your appropriate Windows system directory. Bitdefender typically does not release BitDefender EXE files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing installer.exe and all other EXE files for BitDefender. An incorrectly installed EXE file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10

Files Related to installer.exe

EXE Files Related to installer.exe

File Name Description Software Program (Version) File Size (bytes) File Location
ProductAgentService.exe Bitdefender Agent Bitdefender ConnectAgent ( 1291888 C:\Program Files\Bitdefender Agent\
Watchdog.exe Bitdefender Agent WatchDog Bitdefender ConnectAgent ( 488760 C:\Program Files\Bitdefender Agent\
ondemand.exe Windows Executable BitDefender 1079152 C:\Program Files\Bitdefender Antivirus Free\kit...
FileSyncConfig.exe Microsoft OneDrive Configuration Application Microsoft OneDrive (19.222.1110.0006) 367464 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
MpSigStub.exe Microsoft Malware Protection Signature Update Stub Microsoft Malware Protection (1.1.16500.1) 748816 C:\Windows\System32\

Other Files Related to installer.exe

File Name Description Software Program (Version) File Size (bytes) File Location
CBS.log Log BitDefender 1226468 C:\Windows\Logs\CBS\
WmiApRpl.ini Windows Initialization BitDefender 29736 C:\Windows\inf\WmiApRpl\0009\
WmiApRpl.h C/C++/Objective-C Header BitDefender 3444 C:\Windows\System32\wbem\Performance\
api-ms-win-core-profil... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 18184 C:\Program Files\Bitdefender Antivirus Free\
diagerr.xml Extensible Markup Language BitDefender 44109 C:\Windows\Panther\UnattendGC\


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