No access to windows live mail

Without warning I was unable to access my windows live mail, contacts and calendar. I have tried to find the file msvcr110.dll without success. The error message is now 0x80041161. Can you advise on next steps?  I have windows 8 installed and assumed I would be virus/trojan free. I can access my web mail but my folders and contacts lists are important; my last back up was two months ago and missing key stuff. Yes, I know.