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Toolkit reports the backup failed because path exceeds 256 characters

This error is related to a Windows limitation call MAX_PATH, more information can be found here from Microsoft.

To help resolve this issue, Toolkit version 1.3 introduced a new Report functionality. To verify you are running the latest version of Toolkit, quit Toolkit from the system tray and start it back up, or reboot your computer. Toolkit will automatically update to the latest version. 

To check the version number:
  1. Click the Gear icon in the upper right
  2. Click About
  3. The versions will be listed on that screen, note the Toolkit version
To locate the path that is causing the backup to fail: 
  1. Launch Toolkit 
  2. Click on Backup
  3. Click the More button (User-added image) on the failed backup job
User-added image
  1. Click on Report

This opens a window that displays the path(s) to the file(s) that failed to back up. Click on the file path located in the Host Path column and a window will open allowing you to rename the paths to something shorter so the backup can complete. 


User-added image
This process may be required more than once depending on how many paths exceed 256 characters.