I remember this error as this also occurred to me as well.
What the issue really is: the type of account at time of registering is the root cause.
The method to register for the personal account is different than the business related account thus, the error message will always pop up. It's not a browser related issue.
The personal account for free license is under a whole other website URL.
To resolve: delete the account.
Then find the address (escapes me at current) for the personal license and re-register under that and follow the on-screen prompts.
The website will then give you a license code which shall be input into a field at the prompt.
A download dialogue drop down or pop up menu will appear.
Download and install it. Upon opening, input the personal license code issued by the generator.
That's what worked for me - I figured it out as to what was causing the issue from reading some forums.
In my case, i had used their business section to fill out the user account info to which, once you do that, you cannot register for the free personal license version of VMware. That's all it is - it's the type of account that doesn't match the type of license file.
Regards,
CM