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Windows 7: Backup fail error 0x80070570 solved

28 Oct 2013   #1

Windows 7 Ultimate x64
Backup fail error 0x80070570 solved

My laptop is running Windows 7 Ultimate 64 bit but I believe this problem is not specific to the type of Windows 7. Although I could not find any problem and have not known any other symptoms, since Oct 2010 my laptop would not run Microsoft Backup correctly. I received error code 0x80070570 upon attempts to backup files. Running chkdsk did not find any errors but would reset the dirty bit on the C: drive that I was attempting to Backup. MS Backup would then allow file backup for about 2 days until the dirty bit was set again. Since then I occasionally ran chkdsk and created a backup of files.

In Oct 2013 I bought a new drive and wanted to replace my 500GB C: drive. I wanted to clone the old drive to the new and also wanted to increase the complexity of backups so I bought Acronis True Image. I found that neither Acronis not MS Backup would allow me to create a clone or even an image. Both failed and reported error 0x80070570. Reading forums and conversations with Acronis tech support led me to believe there was some file system corruption that was not detected by chkdsk but was detected by backup software. (Note that Startup Repair operations run from a Windows disk identified file system corruption but did not solve this problem.)

Source of Problem Identified
sfc /scannow as described here led me to identify a file and what appeared to be some associated registry entries that were corrupt. The file identified was a font file: mingliub.ttc. Using Windows Explorer, the font could be seen (and apparently still used by Windows) when clicking the C:\Windows\Fonts folder contents. Using and elevated command prompt and typing dir /p C:\Windows\Fonts, I saw that the file size was 0.

  1. Obtain a good copy of the corrupt file from a Windows disk and place it in a location easy to find (in my case mingliub.ttc is a font file and not required for Windows to load. Therefore I placed it on the Desktop for step 4. If this was a critical file for Windows to load, it is best to place it at root of C:). How to Extract Files from the Windows 7 Installation DVD
  2. Create a restore point then edit registry and delete keys associated with corrupt file and likely identified in the sfc report. (I searched for mingliub.ttc and deleted only the lines in entries in the right column that had hex values in them. I gambled on leaving the left column folders in place as placeholders but wanted to remove any address pointing to a corrupt location.)
  3. Restart computer and boot from a Windows disk (in my case on a USB drive), choose Repair Windows then launch Command Prompt. Delete file. (I typed del C:\Windows\Fonts\mingliub.ttc. Typing dir /p C:\Windows\Fonts verified the file had been deleted.) (Note that attempting this from windows running on my C: drive, even from an elevated command prompt, resulted in access denied. Also note that downloading and using MoveFile to attempt to delete from Windows run from C: also failed.)
  4. Replace deleted file with good copy. (In my case I restarted Wiindows from C: drive and replaced back in to the Fonts folder using Windows Explorer after bootup. If this was a critical file needed for Windows to load, use move command while still in command prompt from step 3 then restart Windows from C: drive.)
  5. Verify repair. Run sfc /scannow and view report to verify the corruption has been eliminated.

My System SpecsSystem Spec


 Backup fail error 0x80070570 solved

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