Ap_expr.h Errors: Download and Troubleshoot

Last Updated: 12/13/2023
[Time to Read Article: 5 minutes]

ap_expr.h uses the H file extension, which is more specifically known as a C/C++/Objective-C Header file. It is classified as a Developer (C/C++/Objective-C Header) file, created for WampServer 3.1.9 by Romain Bourdon.

The initial introduction of ap_expr.h released in XAMPP 5.6.40 was for Windows 10 on 03/08/2019. The latest file update released for WampServer 3.1.9 was on 05/13/2019 [file version 3.1.9].

In this short article, you will discover detailed file information, steps for troubleshooting H file problems with ap_expr.h, and list of free downloads for every version that exists in our comprehensive file directory.

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File Overview


General Information
File Name: ap_expr.h
File Extension: H file extension
File Type: Developer
Description: C/C++/Objective-C Header
User Popularity Rating:
 
Developer and Software Information
Software Program: WampServer 3.1.9
Developer: Romain Bourdon
Software: WampServer
Software Version: 3.1.9
File Details
File Size (Bytes): 14429
Oldest File Date: 12/30/2019
Latest File Date: 12/30/2019


What are ap_expr.h Error Messages?


General ap_expr.h Runtime Errors

ap_expr.h file errors often occur during the startup phase of WampServer, but can also occur while the program is running. These types H errors are also known as “runtime errors” because they occur while WampServer is running. Here are some of the most common ap_expr.h runtime errors:

Microsoft Visual C++ Runtime Library

Runtime Error!

Program: C:\wamp\bin\apache\apache2.4.41\include\ap_expr.h

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.


Most H errors are due to missing or corrupt files. Your ap_expr.h file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with WampServer), or deleted by a malware infection. Furthermore, ap_expr.h file corruption could be caused from a power outage when loading WampServer, system crash while loading or saving ap_expr.h, bad sectors on your storage media (usually your primary hard drive), or malware infection. Thus, it’s critical to make sure your anti-virus is kept up-to-date and scanning regularly.



How to Fix ap_expr.h 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 ap_expr.h 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 ap_expr.h error, please proceed to the Step 2 below.

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

You can uninstall WampServer 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 WampServer 3.1.9 and click "Uninstall"
  5. Follow the prompts for uninstallation.

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

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

WampServer 3.1.9

Romain Bourdon

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 ap_expr.h 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 ap_expr.h 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 ap_expr.h 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 ap_expr.h file version. We maintain a comprehensive database of 100% malware-free ap_expr.h files for every applicable version of WampServer. 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 ap_expr.h Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate WampServer folder location:
    Windows 10: C:\wamp\bin\apache\apache2.4.41\include\
    Windows 10: C:\wamp64\bin\apache\apache2.4.39\include\
    Windows 10: C:\xampp\apache\include\
  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 ap_expr.h 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 ap_expr.h Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying ap_expr.h to your appropriate Windows system directory. Romain Bourdon typically does not release WampServer H 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 ap_expr.h and all other H files for WampServer. An incorrectly installed H 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 ap_expr.h


H Files Related to ap_expr.h

File Name Description Software Program (Version) File Size (bytes) File Location
sql_update.h C/C++/Objective-C Header WampServer 3.1.9 1923 C:\Windows\WinSxS\amd64_microsoft-windows-i..ti...
keycache.h C/C++/Objective-C Header WampServer 3.1.9 8827 C:\Program Files\WindowsApps\Microsoft.XboxApp_...
wsrep_mysqld.h C/C++/Objective-C Header WampServer 3.1.9 17576 C:\Windows\SystemResources\Windows.Data.TimeZon...
generic-msvc.h C/C++/Objective-C Header WampServer 3.1.9 3732 C:\Program Files\WindowsApps\Microsoft.Office.O...
apr_xml.h C/C++/Objective-C Header WampServer 3.1.9 12844 C:\Users\Tester\AppData\Local\Microsoft\Windows...

Other Files Related to ap_expr.h

File Name Description Software Program (Version) File Size (bytes) File Location
setupact.log Log WampServer 3.1.9 62521 C:\Windows\Panther\UnattendGC\
setupact.log Log WampServer 3.1.9 14252 C:\Windows\System32\Sysprep\Panther\
api-ms-win-core-sysinf... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 19208 C:\wamp\bin\mariadb\mariadb10.4.10\bin\
api-ms-win-core-memory... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 18696 C:\wamp\bin\mariadb\mariadb10.4.10\bin\
EtwRTEventLog-Applicat... Microsoft Event Trace Log WampServer 3.1.9 2088 C:\Windows\System32\LogFiles\WMI\RtBackup\


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