Support: Generate a small memory dump in Windows

How to generate a small memory dump in Windows

In case of a system crash, Avast Support may request a small memory dump. A small memory dump is the smallest type of dump file (64 KB) and includes the basic data of the system memory. Please note that this procedure works only on systems which are not frozen completely.

For information about the other types of memory dumps Avast Support may request, please visit the links below:

  1. Log in to Windows as an Administrator, or as a user with administrator permissions.
  2. Download avkb58.zip.
  3. Open and run the contained file SmallCrashOnCtrlScroll.reg to apply necessary changes to your Windows registry.
  4. Restart your computer and wait until the system or program freezes or slows down. At that moment, force a Windows crash by holding down the right Ctrl key and pressing the Scroll Lock key twice.
  5. A blue screen (BSOD) appears. Windows generates a memory dump and restarts your computer automatically.
  6. Locate the latest minidump file (*.dmp) located in C:\Windows\Minidump\ by default, and provide it to Avast Support via the Avast FTP server.
  1. Log in to Windows as an Administrator, or as a user with administrator permissions.
    If you forgot your password, please refer to the instructions on Microsoft's website for your version of Windows:
  2. Download the file avkb58.zip and click Open in the window that appears.
  3. Download the file avkb58.zip select Open with in the window that appears, then click OK.
  4. Download the file avkb58.zip. At the bottom of your browser, click the arrow next to the file name and select Open.
  5. Download the file avkb58.zip and click Open.
  6. Double-click the folder avkb58, then double-click the SmallCrashOnCtrlScroll.reg file and select Run in the Security Warning dialog.
  7. When prompted, click Yes to allow the application to make changes to your PC.
  8. Click Yes and OK to apply necessary changes to your Windows registry.
  9. Restart your computer, log in to Windows with administrator permissions, and wait until the system or program freezes again.
  10. Manually force a Windows crash by holding down the right Ctrl key and pressing the Scroll Lock key twice (right Ctrl + 2x Scroll Lock: the Ctrl key is found under the Shift key. The Scroll Lock key is found in the top right corner of the keyboard.)
  11. A blue screen (BSOD) appears. The system generates a memory dump (progress is indicated in percentage) and restarts automatically.
    If your computer does not restart automatically, restart your computer manually by pressing the Reset or Power button.
  12. Log in to Windows with administrator permissions and locate the latest minidump file (C:\Windows\Minidump by default).
  13. Provide the dump file to Avast Support by submitting a ticket using the instructions in the article below:
For more details about this troubleshooting procedure and registry entries contained within the SmallCrashOnCtrlScroll.reg file, please read the following article on Microsoft's website:
  • All available Avast products for Windows
  • Microsoft Windows 10
  • Microsoft Windows 8.1 / Pro / Enterprise
  • Microsoft Windows 8 / Pro / Enterprise
  • Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate
  • Microsoft Windows Vista Home Basic / Home Premium / Business / Enterprise / Ultimate
  • Microsoft Windows XP Home / Professional / Media Center Edition

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