I get this error for 2 different end users 
Both are using Office 365
2 different Apps
One of them is an old user who had no problem till yesterday
He's using Office 365 16.0.1.2527.21230
Is it something wrong with Office 365 ?
Missing file ?

Both are using Office 365
2 different Apps
One of them is an old user who had no problem till yesterday

He's using Office 365 16.0.1.2527.21230
Is it something wrong with Office 365 ?
Missing file ?