MS Outlook acoount: error 0X8004010F

W7 - Outlook 2013 64 bit

I had a account *** Email address is removed for privacy *** well working.

Now, I don't know why, I get the followings:

Send and receive all > error message 0X8004010F for account *** Email address is removed for privacy *** Sending (Receiving) Outlook data file cannot be accessed

File > Account Information > *** Email address is removed for privacy *** listed

Account settings > Account *** Email address is removed for privacy *** listed > change > POP and IMAP Accoun Settings > Test = OK  (A test message arrives in my default e-mail)

Outllook main page: NOT listed among my other accounts

File > Repair account > Searching for settings .. > Problem Connecting To Server (Establishing Network Connection = OK / encrypted connection not available / Unencrypted > problems check accouont settings > done > Test = OK (A test message arrives in my default e-mail).

Trial to delete and add it as a new account gets a new accounts with an (1)

Does someone uderstand what is my mistake and how may I repair it?

Thank you for helping

bgp