Excel 2013: Corrupt or Unsafe File Warning

[Mark Symons]

When opening an Excel spreadsheet that has been generated by Timesheets plugin v2.9.3.3, Excel 2013 gives a warning to say that the extension of the file does not match the format and that the file may be corrupt or unsafe.

The file does then open normally. But the warning freaks out management users...

[Andriy Zhdanov]

Hi Mark,

Sorry, I don't know how to fix this. This feature is pretty tricky, plugin serves html in .xls file to make Excel convert it. You may suppress warning, as described here: https://support.microsoft.com/en-us/kb/948615

Thank you.

[Andriy Zhdanov]

Removing version: 2.9 (automated comment)