Recently I found my Windows 10 mail app won't start on one of my accounts. I have 2 accounts: one is with my Microsoft login and the other is with a local account. The local one is used infrequently so I don't know when problem started. The Microsoft account I use often and does not have this problem. Mail version is 17.6416.42001.0 Any suggestions. Would like to avoid a reinstall of mail app if possible.