Fusion VM will not start (Memory issues) after upgrading to Maverick

I havent seen this issue in VMware fusion 5.0.3

VMWare Fusion is compatible with Mavericks.

How much RAM do you have?

Ditto. I'm experiencing the same issue. I would really like to know if there's a way of forcing Mavericks to swap to disk if additional physical memory is required for fat and hungry software - like, say, a Windows VM!

I have the exact same problem.

I have 4 GB of RAM, 1 GB is assigned to the virtual machine.

I am having the same issue. I was allocating 2048 and it has forced me to drop it to 1024 to work.

I am having periodic success by closing EVERY OS X app and restaring then the VM will start again.

The hilarious part is in the Keynote all they could do is tout how Mavericks uses less memory.

I am on VMware Fusion Version 6.0.1 (1331545)

and

MacBook Air 1.8 Ghz Core i7

Memory 4GB 1333 MHz DDR3

OX 10.9 (13A603)

In fareness, Mavericks does use less memory - look at how often Mavericks needs to swap to disk (or SSD) and contrast with Mountain Lion or earlier. It's a genuinely impressive trick, and for everything other than VMWare Fusion, it's like having an additional 2GB for free. That's my experience - yours may vary.

The problem, as far as I can see it, is that VMWare needs memory without the jiggery pokery - it is, after all, giving it to another OS. Mavericks doesn't know that VMWare really needs other tasks to be swapped out, and swapped out now, so it diligently does all it can not to swap to disk. Result? VMWare throws a wobbler and refuses to start.

The fix, as I see it, is either for VMWare to release a version of Fusion that isn't so diligent about checking for physical memory on start - once started I think that it will be in a position to muscle Mavericks into swapping to disk any other tasks that are executing (just a theory, I haven't tried this).

The other option would be an update to Mavericks to provide a checkbox in the application info window (for any app, not just VMWare). When ticked, Mavericks would swap out everything that it can in order to allocate RAM to whatever memory hungry app is loading.

Don't shoot Apple over this. In Mavericks they've worked a memory freeing miracle - it might take the developers a little while to catch up.

I've had nothing but positive experiences from VMware Fusion historically. If we're being level headed, its only been a day and a fix should be available eventually (I hop).

I totally agree. Patience is exactly the level-headed ticket.

I am having this same problem. Tried submitting a support request to VMWare but their site repeatedly threw errors while processing my support ticket request. Will try calling via phone support and possibly smoke signals if that doesn't work.

Okay, the solution seems to be this (it works for me anyway, I hope that it works for you all too).

1. Find the VMWare Fusion 6 executable (usually in your Applications folder)
2. Right click on it, and select 'Get Info'
3. In the VMWare Fusion Info window that opens, click the 'Prevent App Nap' checkbox.
4. Close the Information Window
5. Start VMWare Fusion (with your fingers crossed, and touching wood of course.)
6. Hopefully it will now work.

Please let me know if this works okay for you too.

I was able to get the memory up to 1758 from 1024 with Buggins Turn's suggestions... which is better - stay tuned

I tried Buggins Turn's suggestion of checking "Prevent App Nap", but that did not help. If I suspend a VM, I can't reactivate it again without closing every other app or restarting the machine. This was never a problem for me with OS X 10.8.

I have opened a support ticket with VMWare and will post any more information here.

Same issue here. 2012 Air, 8GB, ran 3-4 VMs in Fusion 5/10.8, only 2 in Fusion 6/10.9. Opened a ticket with Fusion support, they provided the App Nap advice, which unfortunately made no difference in my case.