How to Repair Computer Errors by Yourself
[Solution] 0x1200a9
Umeko May 16th, 2015
Are you experiencing Error 0x1200a9? Well...you are not alone.
Item Info
Error Codes 0x1200a9
Recommended Download 0x1200a9 Error Fixer
File version 5.2
Size 4.5MB
Speed Up Your PC Free Performance Scan

0x1200a9 Error Again? What Should I Do?

0x1200a9, popped up when I was tring to shut down a program. And always this error: 0X8501001d Windows 10 comes together with that error message. Any connections? my computer is becoming slower and slower. what's wrong?

- Clyde Forshey

0x1200a9 Error Again? What is Wrong with My Computer?

An error has been detected and Windows has been shut down to prevent damage to your system. The error seems to be caused by 0x1200a9.

Can't chat onine since error 0x00000011 THREAD_NOT_MUTEX_OWNER and 0x1200a9 will pop up.

Download 0x1200a9 Error Fixer Now!

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How to Fix 0x1200a9 Error?

Manually editing the Windows registry

Caution: Unless you an advanced PC user, please do not edit the Windows registry manually.

Because of this risk, we highly recommend using a trusted registry cleaner such as SmartPCFixer Using a registry cleaner automates the process of finding invalid registry entries, missing file references (like the one causing your MACHINE_CHECK_EXCEPTION error), and broken links within the registry. A backup is automatically created before each scan, with the ability to undo any changes in a single click, protecting you against the possibility of PC damage. The best part is that repairing registry errors can also dramatically improve system speed and performance.

  • Click the Start button.
  • Type "command" in the search box... DO NOT hit ENTER yet!
  • While holding CTRL-Shift on your keyboard, hit ENTER.
  • You will be prompted with a permission dialog box.
  • Click Yes.
  • A black box will open with a blinking cursor.
  • Type "regedit" and hit ENTER.
  • In the Registry Editor, select the Error 0x9C-related key (eg. Windows Operating System) you want to back up.
  • From the File menu, choose Export.
  • In the Save In list, select the folder where you want to save the Windows Operating System backup key.
  • In the File Name box, type a name for your backup file, such as "Windows Operating System Backup".
  • In the Export Range box, be sure that "Selected branch" is selected.
  • Click Save.
  • The file is then saved with a .reg file extension.
  • You now have a backup of your MACHINE_CHECK_EXCEPTION-related registry entry.

The next steps in manually editing your registry will not be discussed in this article due to the high risk of damaging your system. If you would like to learn more about manual registry editing, please see the links below.

Check Event Viewer

Check the System and Application logs in Event Viewer for errors or warnings that might provide more clues on the cause of error 0x1200a9.

Still can't Fix Error 0x1200a9?

1. Click the button to download Error Fixer . Install it on your computer.  Open it, and it will scan your computer. The junk files will be shown in the scan result.

error fixer

2. After the scan is finished, you can see the errors and problems need to be fixed. Click Fix All.

registry cleaner

3. The Repair part is finished, the speed of your computer will be much higher than before and the errors have been removed. You can also use other functions in SmartPCFixer. Like dll downloading, junk file cleaning and print spooler error repair.

registry cleaner

Tagged: 0x1200a9, 0x1200a9 fixer

Comments (4)

What People Say: (About 0x1200a9)

Wow, era más fácil de lo que esperaba!

by Julius Lloyd May25th

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