I have just installed Anaconda 5.3 64-bit (Anaconda3-5.3.0-Windows-x86_64) on Windows 10 and am getting this error when trying to run Spyder.
pythonw.exe
Another way which Works for me (I deleted all DLL files but the problem continued) was to downgrade ANACONDA to Anaconda3-5.2.0-Windows-x86_64. I got the installer in this link