Some users report that corrupted system files can lead to the error as well. This is a known glitch on Windows 10’s activation wizard, especially on its 10240 build. The most common cause of this error seems to be a failed connection to the Key Management Service (KMS).
A problem occurred when Windows tried to activate.The filename, directory name or volume label syntax is incorrect. Windows 10 Activation error 0x8007007B.There are some examples of the appearance of the 0x8007007 error : The error also appears on older versions of Windows, dating all the way back to Windows Vista. The error appears after you type in your license key and try to activate Windows 10.
You can run into this error when trying to install Windows 10 with a volume-licensed media.
If you see the error code 0x8007007B when attempting to activate Windows, you’ve come to the right place to fix it. Running into issues when trying to activate your copy of Windows 10 is rather tiresome.