Excel fails to open an ~xlsx file from the Western Digital NAS. It shows downloading .... than fails cannot open file.
The file was previously fine and if it is copied the copy opens easily. If the copy is renamed I can use Excel's recent files option to open it. The old file cannot be opened even if renamed.
I can typically use the file for a day or so, then it becomes unusable. It cannot be opened from another Windows 7 machine either but again a copy is accessible.
The files are small typically 100Kb, password protected
Windows and Office are up to date on both machines
The problem is becoming more frequent with no apparent cause
I have tried opening from explorer, the recently used files list in Excel, and file ... open
I have tried using mapped drive, UNC name, IP address
The network location is recorded as trusted
Although there is the potential to share the file it has not been opened by other users in between working and entering the state where it cannot be used.
When a file is unusable in Excel right clicking in explorer takes a long time to offer the normal context menu. However if the file is selected then copy/paste is quick and unaffected.
Please can anyone help me fix this annoying issue.