: When you open an old file in modern Excel, it automatically enters Compatibility Mode , preserving the original format. 2. Free Open-Source Alternatives
Use Excel with earlier versions of Excel - Microsoft Support
Since legacy Excel versions lack modern security patches, it is often safer to use free compatible alternatives: Microsoft Excel | Free Online Spreadsheets Software
: When you open an old file in modern Excel, it automatically enters Compatibility Mode , preserving the original format. 2. Free Open-Source Alternatives
Use Excel with earlier versions of Excel - Microsoft Support
Since legacy Excel versions lack modern security patches, it is often safer to use free compatible alternatives: Microsoft Excel | Free Online Spreadsheets Software
