please help, cannot open anymore microsoft excel files saved on a crypto vault 
That’s what Office says after having copied from the vault to one drive.
Replying yes or no does not change anything, simèly it does not work.
That’s what Office says after having copied from the vault to one drive.
Replying yes or no does not change anything, simèly it does not work.
Welcome to the Cryptomator Community 
can you open the excel file from inside the vault? And what does Word report if if you click yes in the shown dialog?
No, I cannot open the excel file from the vault. That’s the problem. I must move the file outside the vault to work on it. By the way, I noticed that drive F: (where the vault is mounted on) is no more visbile from the excel desktop app, so I cannot create any microsoft sheet into the vault. I am using default settings from cryptomator and microsoft, nothing unusual.
I am a bit confused about the actual problem:
Are the files, which were copied from inside the vault to an unencrypted location, damaged, so they cannot be opened anymore?
Or are you unable to open files stored inside the vault?
Today seems that the problem disappeared: now microsoft do see the network drive where the vault is mounted and execel sheets become accessible again.
Maybe was solved by the recent windows update.