Secure backup keeps failing

[PorscheDude]

Hi guys,

I have a 3 year old iPhone 6 that is giving me a lot of problems, so I purchased a 6S plus on Friday to replace it. I've been trying to backup my iPhone 6 via a secure backup so I can do a full restore on the new phone. It keeps giving me an error. I tried the following

-Updated iTunes on my Desktop (Windows machine) to the latest version.
-Deleted all old versions of my previous backups.
-Removed music from my device (in case that was holding it up)
-Reset all settings on the phone.
-Upgraded iPhone to IOS 11.
-Tried doing a backup on my Macbook running the latest OS X with all new updates
-Deleted old backups on my mac, no dice.

I can now do a regular backup, just not a secure one. If I remember correctly, a secure backup takes into account all of the old Appdata and passwords, correct? I tried AnyTrans and that software doesn't work well.

I'm at my witts end. I've never had these issues before with Apple products. Any ideas? Is there a way I can see the logs to see what is the problematic App/data piece?

 

[jr866gooner]

Do you know what the error says exactly?

 

[Givmeabrek]

If you are talking about the encrypted backup all you will lose is your passwords. Shouldn't be a big problem as long as you are prepared to enter them again.

Edit: You will lose passwords, wifi info, health data, and website history

 

[PorscheDude]

The error says "iTunes could not backup the iphone because an error occured while reading from or writing to the iPhone.". I tried using the logging function in xcode to see what the error code was. This is what it says right before the error message pops up.

Sep 24 19:08:11 OLD-IPHONE BackupAgent2[562] <Notice>: File modified while being uploaded (mod time changed): <private> (<private>)
Sep 24 19:08:12 OLD-IPHONE BackupAgent2[562] <Notice>: File modified while being uploaded (mod time changed): <private> (<private>)
Sep 24 19:08:17 OLD-IPHONE BackupAgent2[562] <Error>: <private>
Sep 24 19:08:17 OLD-IPHONE BackupAgent2(MobileBackup)[562] <Notice>: No POSIX code for error: <private>
Sep 24 19:08:19 OLD-IPHONE BackupAgent2[562] <Error>: Error uploading "<private>" to "<private>": <private>
Sep 24 19:08:19 OLD-IPHONE BackupAgent2[562] <Error>: Backup error - <private>

Is there any way I can get more information from these logs? Thanks guys.