Error Message popping up everytime

Asked By 7060 points N/A Posted on -

Why is it every time I try to run some applications, an error message pops up, "16 bit windows subsystem: C:WINNTsystem32autoexec.nt. The system file is not suitable for running MS-DOS and Microsoft Windows applications. Choose 'Close' to terminate the application."

Best Answer by evmdomingo
Answered By 40 points N/A #82827

Error Message popping up everytime


Hi there, 

It seems some errors are bugging you while opening some apps.

Very sad to say that Huge loads of Malware and or Viruses are Playing with your system. You must be very careful while using External devices to install Soft wares and other stuffs and also while using the network.
It's really horrible and tough to fight with viruses and only a PC expert geek could do remove SOME of the common viruses. 
Better install a GOOD Antivirus and or Internet security. 
I personally Recommends Kaspersky Internet Security 2012. It works great . It catches almost all the viruses and also very smooth to operate. What problem Kaspersky has till its 2011 versions was slow updates. Now they have solved the problem.
Go try downloading the trial version and try it for 30 days and if and only if you liked to then buy the license for 1 year.
1. Try Updating your OS.
2. Or if it didn't mean to try reinstalling your OS.
Best Answer
Best Answer
Answered By 0 points N/A #82829

Error Message popping up everytime



I would love to share this solution that I have for your problem. But please be patient and just simply follow my instructions. STEP BY STEP. Thank you.

Just to be sure, is this the message that keeps on bugging you whenever you tried to start, run or even install a program?

If YES, this error message ONLY pops out when AUTOEXEC.NT file is missing or damaged from the C:WINNTSystem32 directory. All you need to do is to get it back or repair it.


You have to go to C:WINDOWSREPAIR or C:WINNTREPAIR to check if Windows had automatically made a backup copy of Autoexec.nt. You can do this in two ways. Using RUN and using SEARCH. Either way, it would go to the same folder.

1. Using Run:

  • Click Start. And click RUN.
  • Type in C:WINNTRepair or C:WINDOWSRepair and click GO or just hit ENTER key.
  • Right-click the Autoexec.nt file, and then click Copy.
  • Click Start again, click RUN.
  • Type C:WINNTSystem32 or C:WINDOWSSystem32, and then click OK.
  • In the System32 folder, press Ctrl + V to paste the Autoexec.nt file in this folder.

2. Using Search:

  • Click Start. And click SEARCH.
  • In the ADDRESS type in:
  • C:WINNTRepair or C:WINDOWSRepair and click GO or just hit ENTER key.
  • Or you could type in C:WINNT or C:WINDOWS and just look for REPAIR folder

3. When you open the folder. It should look something like this.

4. Look for AUTOEXEC.NT or autoexec.nt

5. If found, right-click the Autoexec.nt file, and then click Copy.

6. Then type in the ADDRESS C:WINNTSystem32 or C:WINDOWSSystem32.


If you can't find a copy of AUTOEXEC.NT in your Repair directory, that will lead us to Second Step.


Use your original Windows Operating System disk to get the missing files.

1. Insert your CD into the CD drive or DVD drive.

2. Click Start, and then click RUN.

3. In the Open box, type cmd, and then click OK.

4. At the command prompt, type the following commands, pressing ENTER after each command:

Expand CD-ROM Drive Letter:i386autoexec.nt_ c:windowssystem32autoexec.nt


Your CD-ROM Drive could be letters: D,E,F,G (you could look for it first in MY COMPUTER)

5. Then try to open/install/run a program/application. If the issue is resolved, do not complete the remaining steps. If the issue is not resolved, go to the Third Step.


Use Notepad.

1. Click Start, then ALL PROGRAMS, then ACCESSORIES, then select NOTEPAD.

2. In Notepad, type the following entries:

@echo off

lh %SYSTEMROOT%system32mscdexnt.exe

lh %SYSTEMROOT%system32redir

lh %SYSTEMROOT%system32dosx

SET BLASTER=A220 I5 D1 P330 T3

3. Then on the File menu, click Save As.

3. In the File Name box, type Autoexec.nt, and then click SAVE. REMEMBER the directory where you saved it.

4. Close the Autoexec.nt file.

5. Start Windows Explorer.

6. Locate the Autoexec.nt file, where you save it.

7. Right-click the Autoexec.nt file, and then click Copy.

8. Click START, and select RUN.

9. Type this %SYSTEMROOT%System32

10. When the System directory opened. Right-click and click Paste.

If the issue continues to occur after you’ve done the THIRD STEP, copy the Autoexec.nt from the Repair folder in Windows to the System folder. To do so, follow these steps:

1. Click START, click RUN.

2. Type C:windowsrepair, and then click OK.

3. Right-click Autoexec.nt, and then click

4. Click START, click RUN.

5. Type C:windowssystem32, and then click OK.

6. Right-click anywhere in that folder, and then click Paste.

7. Right-click the Autoexec.nt file that you just copied, and then click Properties.

8. Click to select Read-Only, and then click OK.

Note: You must enable Read-Only permissions or the files will be removed after you restart Windows.

I hope that I was able to solve your problem. If not, we could talk about it. I am more than willing to help you again. God Bless.

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