Few common steps you can take to resolve:

1. **Check compatibility:** Ensure that you are using a compatible version of Abaqus CAE and Excel. Abaqus may support specific versions of Excel, so verify that your Excel version is compatible.

2. **Verify file format:** Abaqus CAE provides various file formats for exporting data, such as .txt, .csv (comma-separated values), or .xls (Excel format). Make sure you are exporting in a format that Excel can recognize. Consider trying different file formats to see if the error persists.

3. **Check data integrity:** Confirm that the data you are trying to export does not contain any errors or inconsistencies. Abaqus CAE may encounter issues when exporting corrupted or incomplete data. Review the data within Abaqus CAE to ensure its integrity before exporting.

4. **Reduce dataset:** If you are exporting a large amount of data, try exporting a smaller subset to see if the error still occurs. Sometimes, Excel may struggle with processing very large datasets, causing errors. Exporting a smaller subset can help identify if the issue is related to the dataset's size.

5. **Update software:** Ensure that both Abaqus CAE and Excel are up to date. Software updates often include bug fixes and compatibility improvements, which may address the error you are encountering.

6. **Consider alternative methods:** If exporting directly to Excel continues to be problematic, try exporting the data to a different format, such as a .csv file, and then import that file into Excel. This alternative approach might bypass any compatibility issues between Abaqus and Excel.

7. **Review error messages:** If you receive any error messages during the export process, carefully read and analyze them. The error message might provide specific details about the cause of the problem, allowing you to narrow down the issue and search for targeted solutions.

Good luck

Ranim Abdmouleh, you are using an unregistered Microsoft Excel. For more, let's connect on WhatsApp to discuss; https://wa.me/+923440907874