Windows 7: Windows Live mail won't open, FIXED - Win 7 64 bits

Hi all,

One day, for no apparent reason, my Windows Live Mail decided it wouldn't start no matter what I did. After searching this and other resources, and trying the suggested solutions, I finally came up with my own. This is what worked for me, hope it helps someone else:

1. I had a look at the log files, located here: C:\Users\(MY-USERNAME)\AppData\Local\Microsoft\WLSetup\Logs

They all seemed to start OK but then hang at the same place. The last line in the log file said "Cert :00000900 (06/29/2012 20:12:10.094) Verifying signature of file=[C:\Users\__USERNAME__\AppData\Local\Windows Live\.cache\LOO5rDp5hbmHg5sboPPgQ2mUlhc=]..."

2. So I deleted the whole C:\Users\(MY-USERNAME)\AppData\Local\Windows Live\.cache folder. Restarted my PC and tried once more. Live Mail was "Live" again!

Wow, that fixed my Windows Live Mail 64 bit right up.

Big thank you for posting your solution!