SyncToy is a storage service that helps you to sync or back up your files locally.
The complete issue notification is:
Exception during preview: The path is too long after being fully qualified.
confirm the path is less than 260 characters.

How to address this issue and sync your files again?
Take a closer look at the following content to find more effective solutions now.
How to Fix Path Too Long Error in SyncToy on Windows 10/11?

However, if you are dealing with lots of files, this method might be a little troublesome.
Heres how to do it:
Step 1.
Typeappwiz.cpland hit Enter to launchPrograms and Features.

Now, you’re able to see all the programs installed on your system.
Scroll down to findMicrosoft Sync Framework 2.0 Core Components (x64) ENUand right-select it to chooseChange.
TickRepair Microsoft Sync Framework 2.0 Core Components (x64) ENUand hitFinishto start the process.
After that, do the same process to repairMicrosoft Sync Framework 2.0 Provider Service (x64) ENU.
Once done, find out if SyncToy path too long error is still there.
ThisPC backup softwaresupports file backup, disk backup, partition backup, and system backup on Windows 11/10/8.1/8/7.
Meanwhile, it is also capable of syncing files and cloning a disk.
Here, we will take how toback up fileswith MiniTool ShadowMaker as an example:
Step 1.
Launch MiniTool ShadowMaker Trial Edition and enter its main interface.
MiniTool ShadowMaker TrialClick to Download100%Clean & Safe
Step 2.
In theBackuppage, you’ve got the option to snag the backup source and destination.
Backup source click onSOURCEto selectwhat to backup.
Backup destination go toDESTINATIONto select a storage path for the backup image file.
Fix 4: Enable Long Path Support
Step 1.
Right-select theStartmenu and selectRun.
Head towards to the following path:
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem
Step 4.
In the right pane, findLongPathsEnabled> double-tap on it > change theValue datato1> hitOK.
Final Words
What can you do when SyncToy says the path is too long?
Hopefully, one of the solutions can help you out.