How Can You Fix Invalid MS-DOS Function on Windows?

What Does Invalid MS-DOS Function Mean?

The error is shown as follows:

This is actually afile-systemerror that often influences the file functionality only.

It is an annoying issue because it will stop you from operating the file normally.

Luckily, it is possible to get rid of this error.

In the following parts, we collect some solutions that are proved to be effective.

If you are still using Windows 8.1/8/7, the steps are similar.

At last, you still need to reboot your machine to see whether the invalid MS-DOS function error disappears.

Solution 3: Run Reimage

A system corrupt can also cause Windows 10 invalid MS-DOS function.

This solution can work in most cases.

Now, you canclick hereto get Reimage Plus and then use it to kill the invalid MS-DOS function error.

Here, we will show you how to do this job on your system:

1.

PressWindows + Rto openRun.

Navigate to the following path:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\System

4.

Right-hit the blank space on the right pane and then go toNew > DWORD (32-bit) Value.

Rename the value name asCopyFileBufferedSynchronousIoand pressEnter.

Double-choose the new value to open it.

Type1in the value data box and pressEnterto save the change.

Now, read this post to solve this issue without data loss.

We hope they can help you out.