We have developed our own CSP and it has been working fine for years with Windows XP, Vista and Win 7 and OutLook 2K7, 2K10, etc for email signing and decryption. On Win 8 platform though, when OutLook 2K13 starts up and the topmost mail is encrypted, the Decrypt call (which puts out a custom GUI to collect PIN for private key access) freezes OutLook, and finally crashes it after PIN collection.

I have applied the recommended MS hotfix 2813237 but the hang/crash problem persists.

In our case, the Key Store is not Windows Store, and our CSP shows a custom GUI to collect PIN for private key access on OutLook.

Thanks for any inputs

Hi,

I suggest you repost it to Office Forum.

http://social.technet.microsoft.com/Forums/office/en-US/home

Greetings! We faced similar problem. There is likely a solution for you you: http://social.technet.microsoft.com/Forums/office/en-US/1395ad4f-1dd7-41e2-bc64-97118f89b4b3/outlook-pro-2013-crashes-on-send-after-checking-encryption-and-digital-signing

Tell me, if it will help.

Good luck!