Outlook 64bit constantly crashes when sending email.

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Hi,

I have a problem where outlook crashes frequently when trying to send email. It doesn't seem to matter if it a new email or a reply.I have had office installed for about 8 months, but have only had this problem for approx 1 month.

I have office pro plus 2010 64bit installed on windows 7 64 bit. both are fully updated with the latest service packs. I have 2 office 365 exchange accounts setup on it. I also have my iphone and ipad connected to these accounts and never have an issue. I have this issue both at home and office, so not a network issue.

Things I have tried:-

• System restore to the furthest restore, this is only about 3 weeks ago.
• disabling all add-ons
• install repair
• full uninstall/reinstall

The only solution i have found is to install 32bit instead, but surely there must be a fix for 64 bit. I also have another PC running 64bit office 2010 and 64 bit windows 7, that works!