Troubleshooting Fusion startup issues

Details
• A license expiry message appears
• You are asked to register Fusion every time you start it.
• You see any of the following errors:
◦ Error: Module version mismatch 4 != 5. Please update host. Failed to connect virtual device Ethernet0.
◦ Failed to connect to peer process.
◦ Cannot find a valid peer process to connect to.
◦ The following install step failed: run postflight script for VMware Fusion. Contact the software manufacture for assistance
◦ VMware Fusion cannot connect to the virtual machine. Make sure you have rights to run the program and access all directories it uses and rights to access all directories for temporary files.


Solution

To begin troubleshooting this issue, restart your Mac. If, after the Mac restarts, Fusion still presents the same error, manually reinstall Fusion.

If VMware Fusion startup problems persist, repair the Mac's disk permissions using the Disk Utility, then return to step 1 above.

To repair the disk permissions:
1. Open the /Applications/Utilities folder.
2. Double-click Disk Utility.
3. Select the system hard drive.
4. Click Repair Disk Permissions.