By Ivy / Last update October 20, 2022

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 reason. 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 fixing "Windows 10 Sync Center not working" issues, you can use a reliable sync software as replacement. It's much simple and easy to use.

# Fix Enable offline files greyed out (2 ways)

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 (2 ways)

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. Try  the steps below to fix it.

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 your 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 enables 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 in the Users Properties Settings.

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 that 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

Windows 10 Sync Center not working: how to sync network files easily

Hope the above solutions can help you fix Windows 10 sync center not working. But if you cannot fix it or want an easier way to sync network files to local drive, in Sync Center, we call the synced files as offline files, try AOMEI Backupper Professional

With it, you can sync files/folders to network drive, cloud drive, NAS, external hard drive, USB, etc, so as to stay away from the computer failures, such as, system crash, hard disk collapse, virus attack, and more. Also, you can sync files on the network drive for easy access to files you will use frequently, even without internet. Below are 4 very popular sync solutions:

Basic Sync: This feature will sync changed data from the source directory to the destination directory, but not sync files the other way around. And it will not include the deleted files by default.
Real-Time Sync: Similar to Basic Sync, but it's synced in real-time and contains all the changes including the deleted files.
Mirror-Sync: Just like previous two features, the core of this feature is one-way file sync, which sync files from source to destination. The difference is the newly added files or modification in the destination will be overwritten at the next sync.
Two-Way Sync: This feature is different from previous three features, which will track changes and reflect them in both source and destination directory.

Now, select your sync solution, here take Basic Sync as an example, and sync network folders to local drive with this software. If you want to synchronize files in server 2003/2008(R2)/2012(R2)/2016(R2)/2019/2022, 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 11/10/8.1/8/7/XP
Secure Download

File Sync

Step 2. Click Add Folder and Share/NAS to select files or folders you want to sync to your computer.

Add Folder

If this is the first time to sync network files to local drive, click Add Share or NAS Devices at the pop up window. Then, type display name, network path, user name and password to get access.

Add Share or NAS Devices

Step 3. After selecting network files, you can then select a local path to save it. At last, click "Start Sync" to sync network files locally. 

Add Sync Destination

• 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.
• Don't modify the source folder name, otherwise the sync task will be interrupted.
• You are not allowed to sync files over 4GB to partition with FAT32 file system.

• To avoid backup disk full due to a large amount of synced files, you can enable Normal or High compression level or splitting in the "Options" feature. 
• To continuously sync network files to a local drive, you need to enable Daily/Weekly/Monthly in 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.

★ Bonus tip: protect PC files with AOMEI Cloud

As cloud storage is becoming more and more popular, AOMEI offers users its own cloud - AOMEI Cloud. If you have an AOMEI account, you can backup files to AOMEI Cloud for data protection. You'll get 1TB free storage for 15 days after you sign up for an AOMEI account.



"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  7 given solutions or replace it with a third-party file sync software - AOMEI Backupper Professional. It can not only help you sync network files to local drive, but also to external storage for disaster recovery. 

In addition, if there are some network files you don't need to use frequently but want to protect, it's suggested to backup files to external hard drive. All of them will be compressed to an image file and you can only see them after restoring. If it's on the network drive, please add network drive first. 

And you can still protect your computer with System Backup or Disk Backup. Usually, you can enjoy schedule backup, incremental & differential backup, backup scheme (to delete old backup images) during the backup process.