Having trouble opening a file? It’s probably because it's been saved in a file format that this version of Excel doesn’t support. Check the table to see if that’s the case.
| File type | Open and edit | Open as read-only | 
|---|---|---|
| Excel workbooks (.xlsx) | Yes | Yes | 
| Excel workbooks (.xls) | No | Yes | 
| Excel templates (.xltx) | No | No | 
| Non-XML binary workbooks (.xlsb) | Yes | Yes | 
| Comma-delimited (.csv) | No | Yes | 
| Macro-enabled workbooks (.xlsm) | Yes VBA functions won't run. | Yes | 
| OpenDocument spreadsheet (.ods) | No | Yes | 
| Excel templates (.xlt) | No | Yes | 
| Macro-enabled templates (.xltm) | No | No | 
| Macro-enabled add-ins (.xla and .xlam) | No | No | 
| Extensible markup language (.xml) | No | No | 
| Data interchange format (.dif) | No | No | 
| Hypertext markup language (.htm, .html) | No | No | 
| Web pages (.mht) | No | No | 
| Printable files (.prn) | No | No | 
| Symbolic link files (.slk and .sylk) | No | No | 
| Plain text file (.txt) | No | No | 
| Binary interchange file formats (Biff2, Biff3, Biff 4, Biff 5) | No | No | 
| File type | Open and edit | Open as Read-Only | 
|---|---|---|
| Excel workbooks (.xlsx) | Yes | Yes | 
| Excel workbooks (.xls) | No | Yes | 
| Excel templates (.xltx) | No | Yes | 
| Non-XML binary workbooks (.xlsb) | No | Yes | 
| Comma-delimited (.csv) | No | Yes | 
| Macro-enabled workbooks (.xlsm) | Yes VBA functions won't run. | Yes | 
| OpenDocument spreadsheet (.ods) | No | Yes | 
| Excel templates (.xlt) | No | Yes | 
| Macro-enabled templates (.xltm) | No | No | 
| Macro-enabled add-ins (.xla and .xlam) | No | No | 
| Extensible markup language (.xml) | No | No | 
| Data interchange format (.dif) | No | No | 
| Hypertext markup language (.htm, .html) | No | No | 
| Web pages (.mht) | No | No | 
| Printable files (.prn) | No | No | 
| Symbolic link files (.slk and .sylk) | No | No | 
| Plain text file (.txt) | No | No | 
| Binary interchange file formats (Biff2, Biff3, Biff 4, Biff 5) | No | No | 
| File type | Open and edit | Open as read-only | 
|---|---|---|
| Excel workbooks (.xlsx) | Yes | Yes | 
| Excel workbooks (.xls) | No | Yes | 
| Non-XML binary workbooks (.xlsb) | No | Yes | 
| Comma-delimited (.csv) | No | Yes | 
| Macro-enabled workbooks (.xlsm) | Yes VBA functions won't run. | Yes | 
| OpenDocument spreadsheet (.ods) | No | Yes | 
| Excel templates (.xlt) | No | Yes | 
| Macro-enabled templates (.xltm) | No | No | 
| Macro-enabled add-ins (.xla and .xlam) | No | No | 
| Extensible markup language (.xml) | No | No | 
| Data interchange format (.dif) | No | No | 
| Hypertext markup language (.htm, .html) | No | No | 
| Web pages (.mht) | No | No | 
| Printable files (.prn) | No | No | 
| Symbolic link files (.slk and .sylk) | No | No | 
| Plain text file (.txt) | No | No | 
| Binary interchange file formats (Biff2, Biff3, Biff 4, Biff 5) | No | No | 
 
                         
				 
				