Can't login in Zoho CRM Outlook Plugin

I'm using Outlook 2010 32 bit, and in the last 2 days i haven't been able to login in the outlook plugin with my Zoho CRM Credentials. I haven't changed my password and was working before. Only recently changes in my system were 1 - installing a service pack for office 2010 and 2-installing windows 8.1 preview.

Any help would be appreciated.

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