This is the step-by-step fix for people unable to save files to a shared folder on the macOS version of VMware Fusion (8.5.x or above).
The issue occurs after installing the Fall 2017 Update for Windows 10. If you have the Home edition, it will automatically download itself and then send you reminders to install it every time you launch Windows.
1. Download VMware Tools 10.2
1A. Follow this link: https://packages.vmware.com/tools/releases/10.2.0/windows/VMware-tools-windows-10.2.0-7253323.iso.
1B. Save the ISO file on your macOS desktop.
2. Uninstall VMware Tools 10.1.x
2A. Go to the Start menu in Windows and open up Control Panel.
2B. Go to "Uninstall a program" under Programs and Features.
2C. Look for VMware Tools in the list; it should be near the bottom.
2D. If the version number (last column) is 10.1.x or earlier, click on VMware Tools and then on "Uninstall" in the top menu.
2E. After it's finished uninstalling, it will ask you if you want to restart; click "Yes".
3. Install VMware Tools 10.2
3A. After your Windows machine has started up, click on the "Virtual Machine" menu of VMware Fusion, and then on "Settings".
3B. Under "Removable Devices", click on "CD/DVD".
3C. Click on the "Connect CD/DVD Drive" checkbox.
3D. In the dropdown menu, choose "Select a disc or disc image..." and then browse to the ISO file on your macOS desktop.
3E. A notification will appear on your Windows machine ("DVD Drive (D:) VMware Tools -- Select what happens with this disc"); double-click on it.
3F. Click on "Run setup64.exe" from the menu that appears.
3G. Click on "Yes" to allow the app to make changes to your device.
3H. Click on "Next" when the installation wizard appears.
3I. Select "Typical" for the type of installation.
3J. After it's finished installing, it will ask you if you want to restart; click "Yes".
The issue should be resolved after the virtual machine has restarted. You can test it by opening a Microsoft Office file (Word, Excel, PowerPoint, etc.) and then saving a copy to a shared folder.
