What Causes the ‘Error -39’ cannot sync on iTunes?

Fixing the Error -39 Syncing Issues on iTunes

1. Disable the Antivirus Software

If you are on a Windows computer and there is a third party Antivirus software installed, it is recommended that you disable the Antivirus. Also, since Windows has a built-in software called Windows Defender. We will also be disabling that temporarily. For that:

2. Delete the Photo Cache

The photo cache is created by the device while creating the backup to optimize the picture gallery for the new device. However, this cache can sometimes be corrupted which can prevent the backup from proceeding and this error might be shown. Therefore, in this step, we will be deleting the photo cache and it won’t affect our backup in any way. This process differs for Windows and Mac, follow the steps for your respective operating system.

For Mac:

For Windows:

3. Update iTunes

It is important that iTunes is up to date in order for the backup process to proceed. Therefore, in this step, we will prompt it to check for any updates manually. For that:

4. Update Windows

In some cases, an outdated version of Windows might be preventing you from backing up your device. Therefore, in this step, we will be checking and applying any available updates. For that:

5. Update macOS

It is important to update Mac to the latest available version to get the best out of software optimization and this might also fix the error that we are facing. In order to update:

Fix: “iTunes could not restore the iPhone or iPad due to corrupt or…Spotify Desktop and Mobile Not Synced? Try these fixesTroubleshoot iTunes Cannot Connect ‘Unknown Error 0XE80000A’Fix: iPhone and iPad Reboots Randomly Due to Date/Time iOS Bug iPhone or iPad cannot be synced due to an unknown error  39 - 32iPhone or iPad cannot be synced due to an unknown error  39 - 61iPhone or iPad cannot be synced due to an unknown error  39 - 63iPhone or iPad cannot be synced due to an unknown error  39 - 54iPhone or iPad cannot be synced due to an unknown error  39 - 9iPhone or iPad cannot be synced due to an unknown error  39 - 16iPhone or iPad cannot be synced due to an unknown error  39 - 82iPhone or iPad cannot be synced due to an unknown error  39 - 12iPhone or iPad cannot be synced due to an unknown error  39 - 72iPhone or iPad cannot be synced due to an unknown error  39 - 92iPhone or iPad cannot be synced due to an unknown error  39 - 60iPhone or iPad cannot be synced due to an unknown error  39 - 79