I am working remotely on a Synology NAS file system. Sometimes, not always, when I try to save a Microsoft Excel file, I get a message box “Netdrive. Failed to upload …” It tries this 4 or 5 times. Then if I close the Excel file and look in File Explorer, it is NOT there. But then, if I log out of Netdrive and log back in, when I check File Explorer it IS there.
This only happens sometimes. Probably more than half but not always. And it does not happen with files in any other application. Microsoft Word works perfectly. Adobe Acrobat works perfectly. AutCAD works perfectly.