0x80070057: How to solve the error on Windows

If you get the error message with the code 0x80070057 on your Windows 7 PC, there is a problem when you try to backup your files. In order to still successfully back up your files, we show you here what methods are available to fix the 0x80070057 error.

This is what error 0x80070057 means

The code 0x80070057 is an error message that you will see when there is a problem backing up your files in Windows 7. To fix the 0x80070057 error and successfully backup your files, there are several possible solutions. If the problem occurs because the decimal separator has not been set correctly on your computer, please proceed as follows:

1. Open the Control Panel and navigate to "Time, Language and Region" in it.
2. Click the "Region and Language" entry there and switch to the "Formats" tab.
3. Open the "Additional settings" there and enter a dot in the "Decimal separator" field before confirming with "OK" and restarting the computer.

Another method to fix the error 0x80070057

Another way to fix the error 0x80070057 is to add a new registry key value. However, please note here that changes to the registry can cause serious problems with the operating system. To use the method anyway, please type the command "Regit.exe" into the search box and click "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\System". Next, navigate to "Edit" > "New" > "DWORD value", search for "CopyFileBufferedSynchronousIo" and select the "Change" option after right-clicking. Finally, enter the value 1 in the value data field and confirm with "OK".