How to Fix: Time Machine fails to create backup without error

When using Time Machine to create backups on a MacBook Pro Retina, Early 2015, running macOS 12.6.3, some users may encounter an issue where the 'Backup Now' option fails to create a new backup without any error messages. This problem affects the user's ability to update their backups and potentially lose important data.

This frustration can be caused by several factors, including issues with the hard drive, disk space limitations, or incorrect Time Machine settings. In this troubleshooting guide, we will explore possible causes and provide steps to resolve the issue.

🔍 Why This Happens

• One main reason for this error is that the available free space on the external hard drive may be too low. When the available space falls below a certain threshold, Time Machine may not be able to create a new backup. To check if this is the case, follow these steps: First, go to About This Mac > Storage > Manage > External Disk. Then, click on 'Manage' next to the external hard drive and select 'Check Availability'. If the available space is too low, try to free up some space by deleting unnecessary files or expanding the storage capacity of the external hard drive.
• Another possible cause is that the Time Machine backup is being written to a different disk than expected. This can occur if the external hard drive has multiple disks with different capacities. To resolve this issue, go to About This Mac > Storage > Manage > External Disk and select the correct disk as the target for Time Machine backups.

🚀 How to Resolve This Issue

💡 Conclusion

To resolve the issue of Time Machine failing to create a new backup without error, first check if the available free space on the external hard drive is sufficient. If not, try to free up some space or expand the storage capacity of the external hard drive. Alternatively, verify that Time Machine settings are correct by selecting the correct disk as the target for backups and setting the backup schedule to 'Automatically'. By following these steps, you should be able to resolve the issue and create a new backup successfully.