By Ivy / Last update March 16, 2021

Content of this article:

Situations to Sync Center Windows 10 not working

Do you sync files with Windows 10 Sync Center? If you sync offline files with Sync Center in home version, you may encounter Sync Center not working in Windows 10. The offline files feature is only available in the Pro, Enterprise, Education edition. It’s the simplest reasons. Besides, I will list the possible situations in the following.

  • Enable offline files greyed out.

  • Windows 10 always available offline missing.

  • Windows 10 folder redirection offline files not syncing.

  • Offline files service cannot be activated Windows.

  • Files do not sync.

How to fix Windows 10 Sync Center not working? (7 solutions)

Before you start any operation, you need to create a disk backup for your computer. Some of the following operations may lead to data loss. In addition to fix "Windows 10 Sync Center not woking" issues, you can use a reliable sync software as replacement. It's much simple and easy-to-use.

# Fix Enable offline files greyed out

To fix this problem, you can choose to enable Opportunistic Locking or reinitialize the offline files cache

Solution 1. Enable Opportunistic Locking

Step 1. Press Win + R to summon the Run window, type regedit.exe in the box and then click OK.

Step 2. Navigate to following registry subkey and Create a new REG_DWORD titled EnableOplocks and set it to 1.



Step 3.Navigate to following registry subkey and Create a new REG_DWORD titled OplocksDisabled and set it to 0.



NOTE: Create a new key titled Parameters if it does not exist under MRXsmb

Step 4.Exit Registry Editor and Restart the computer

Solution 2. Reinitialize the Offline Files Cache

Step 1. Click Start, type registry in the Start Search box, and then press Enter. If you are prompted for an administrator password or a confirmation, type the password or click Continue.

Step 2. Navigate to the following registry subkey, then right-click it, select New and Key from the context menu, type Parameters in the key box.


Reinitialize the Ofline Files Cache

Step 3. Right-click Parameters, select New and DWORD (32-bit) Value, then type FormatDatabase in the box.

Step 4. Right-click FormatDatabase, hit Modify and type 1 in the Value data box, then press OK to exit this window.

Step 5. Exit Registry Editor, and then restart the computer.

# Solve Windows 10 always available offline missing

Solution 1. Do not use D-link network storage device.

If you use a network storage device which does not support offline files, Windows 10 always available offline will not appear on the context menu. D-link is one of the network storage devices which does not support offline files. If this is the case, you can choose to use a different storage device.

Solution 2. Remove Credential on your computer.

If you check Remember my credentials when you connect to a NAS storage device, Windows 10 always available offline will miss.

To fix it, you can follow the steps below.

Step 1. Type Credential Manager in the search box and select it.

Step 2. Click Windows Credentials under the Manage your credential tab, select the credential for you host and Choose Remove option to delete the credential.

Manage Your Incredentials 2

# Windows folder redirection offline files not syncing - fixed

If your network share enable continuous availability, then no users can make any shared folders available offline, not even manually and not just limited to redirected folders.

To make files available offline, you should uncheck Enable Continuous availability.

Redirected Folder

# Offline files service cannot be activated in Windows - Solved

Step 1. Type Control panel in the search box and choose it.

Step 2. Click drop-down menu at the right side of View by option and choose Small icons, then select Administrative tools and Services option.

Step 3. Find Offline Files service, right-click it and choose Start.

Start Offline Files Service

# Files do not sync - how to fix?

In Group Policy, there are some files cannot be synced by default. These files are always with file extension like.mdb, .ldb, .mdw, .mde, .db.

To sync these files, you can disable offline files not cached with GPO. The detailed steps are below. 

Step 1. Type group policy in the search box and choose Edit Group Policy.

Step 2. Find the following Group Policy setting in Local Group Policy Editor, right-click it and select Edit from its context menu, then disable the file extension.

Computer Configuration\Administrative Templates\Network\Offline Files\Files not cached

Files not Cached

That's all the solutions for "Windows Sync Center not syncing". Maybe, you have successfully fixed it. Even If not, you still don't have to worry too much, because you can try another file sync software like AOMEI Backupper Professional to sync files, whether the purpose is to easily access files on the server computer or just for backup.

How to sync files with third-party file sync software?

Here you will use AOMEI Backupper Professional to sync files in Windows 10/8/7/XP/Vista. If you want to access files on the server computer, you need to ensure that they are on the same LAN. If you just want to make an exact copy for disaster recovery, you can choose to sync files/folders to network drive, cloud drive, NAS, external hard drive, USB, etc, so you can stay away from the computer failures, such as, system crash, hard disk collapse, virus attack, and more.

There are four file sync solutions that can be in line with your different needs. Please stay for a while and read them carefully. 

>> Basic Sync: This feature will sync changed data from the source directory to the destination directory, but not sync files the other way around.
>> Real-Time Sync: This feature will monitor changes in real-time and sync them immediately when detected, including the newly added files, modified files, and deleted files.
>> Mirror-Sync: This feature will keep files in the target directory are exactly the same as source directory. The newly added files in the destination directory will be deleted and the changes will be overwritten finally.
>> Two-Way Sync: This feature will track changes and reflect them in both source directory and destination directory. 

Now follow the detailed steps below to sync files with AOMEI Backupper Professional. If you want to synchronize files in server 2003/2008(R2)/2012(R2)/2016(R2)/2019, you could try AOMEI Backupper Server. 

Step 1. Download file sync software - AOMEI Backupper Professional and install it. Then, launch this software, click "Sync" and "Basic Sync" subsequently.

Download Free Trial Win 10/8.1/8/7/XP
Secure Download

File Sync

Step 2. Click  Add Folder > Share/NAS > Add Network Location subsequently and then select files or folder you want to sync to your computer.

Add Folder

Step 3. Click on the seccond box and select a local path to save the network files or folders. At last, click "Start Sync" to begin the synchronization process.

Add Sync Destination

‚ÄĘ The basic sync feature does¬† not sync the deleted files automatically unless you tick "Sync the deletions in source directory to destination" in the "Options" feature.
‚ÄĘ Don't modify the source folder name, otherwise the sync task will be interrupted.
‚ÄĘ You are not allowed to sync files over 4GB to partition with FAT32 file system.

‚ÄĘ If you need to sync a large amount of files, you can enable normal or high compression level in the "Options" feafture. Also, you can clearly distinguish this task from others by making a comment.
‚ÄĘ If you want track changes continuously, it's suggested to enable daily/weekly/monthly schedule sync. Also, you can sync files at a specific event with "Event trigger" or automatically sync files to USB drive when it's plugged in with "USB plug in" feature.


"Windows 10 Sync Center not working" is a big headache for most users, but in this article you can choose to fix this issue with given solutions or replace it with a third-party file sync software - AOMEI Backupper Professional. It can also not only help you sync network files to local computer, but also sync files to external storage for disaster recovery. 

In addition, it's still a professional backup and restore software that can be used to protect your computer or the data on it through file backup, system backup, disk backup, incremental & differential backup, USB plug in, system restore, create bootable media etc. Just download this software to explore it yourself.