Experiencing the Condense Data error in QuickBooks can be frustrating, especially when managing large company files. This error often occurs due to data corruption or issues related to file size. Here are six effective methods to troubleshoot and resolve this error: Create a Backup: Before attempting any fixes, always back up your company file. This ensures you can restore data if something goes wrong. Update QuickBooks: Ensure you're using the latest version of QuickBooks. Updates often include bug fixes and enhancements that may resolve the error. Use the Verify and Rebuild Tool: Run the Verify Data utility to check for data corruption. If any issues are found, use the Rebuild Data tool to repair them. Condense Your File in Stages: Instead of condensing all data at once, try condensing smaller date ranges. This approach can help prevent the error from occurring. Increase Memory Allocation: Adjust the memory settings in QuickBooks to allow more resources for processing large files. Consult QuickBooks Support: If the error persists, contacting QuickBooks support or visiting community forums can provide additional insights and solutions. By following these methods, you can effectively troubleshoot and resolve the QuickBooks Condense Data error