How to Fix Synology Drive App Error Code 1000

January 23, 2026

jonathan

If you’re using Synology Drive and suddenly hit Error Code 1000, don’t panic! You’re not alone. This error is fairly common and usually fixable in just a few steps. Whether you’re syncing files, backing up documents, or just trying to keep your NAS in harmony with your devices, we’ll walk you through it all.

TL;DR:

Error Code 1000 in Synology Drive often means there’s a connectivity or authentication issue. Check your internet connection, make sure your NAS and Drive Client are up to date, and reset the connection if needed. We’ll break it all down with step-by-step help below.

What is Synology Drive Error Code 1000?

This mysterious-sounding code generally means something is off with your connection between the Synology Drive Client and the NAS. It could be one of the following:

  • Bad or lost internet connection
  • Outdated Synology Drive client or server
  • Wrong user credentials or permissions settings
  • Firewall or antivirus blocking the connection

Let’s break it down and fix it, one simple step at a time. 💪

Step 1: Check Your Internet Connection

This might sound basic, but it’s the most common cause. Make sure you’re online.

  • Can you browse the web?
  • Can you access your NAS through a browser?
  • If yes, the connection is good. If no, fix your network first.

If you’re on Wi-Fi, try switching to a wired connection. Or at least restart your router. Old trick, but it works!

Step 2: Verify NAS Accessibility

Next, you want to ensure your Synology NAS is up and running correctly. Here’s how:

  • Open your browser and type in the NAS IP address or QuickConnect ID.
  • Login and check if you can access DSM (DiskStation Manager).
  • If DSM won’t load, the problem might be with the NAS itself.

In that case, check for power issues, disk problems, or strange LED lights. Refer to your model’s manual for LED meanings.

Step 3: Update Everything (Seriously!)

Outdated software is often the sneaky culprit behind Error Code 1000.

Update the Synology Drive Client:

  1. Open the Synology Drive Client on your computer.
  2. Click on the settings icon, usually in the top-right corner.
  3. Look for “Check for Updates.” Install anything that’s available.

Update the NAS/Drive Server:

  1. Login to your NAS through a browser.
  2. Go to Package Center and find Synology Drive Server.
  3. Click Update if an update is available.

Then restart both your NAS and the computer running the Drive Client.

Step 4: Reconnect the Synology Account

Sometimes you just need to re-do the handshake. Like giving your devices a proper high five.

  1. Open the Synology Drive Client.
  2. Click on your existing connection, then select Remove Connection.
  3. Click Add Connection and enter the NAS address, your username, and password.

Tip: Use your NAS’s local IP if QuickConnect gives you trouble.

Step 5: Check User Permissions

If the account you’re using doesn’t have the right privileges, the Drive Client can’t work properly.

  1. Log in to DSM (your NAS dashboard).
  2. Go to Control Panel > User.
  3. Select your username and click Edit.
  4. Under Permissions, make sure Synology Drive is granted access.

You also want to make sure the shared folder you’re syncing to/from is accessible by this user. If not, grant access there too.

Step 6: Watch Out for Firewalls and Security Software

Sometimes your antivirus or firewall software is just trying to help… a bit too much.

  • Temporarily disable your firewall and see if the connection works.
  • If it does, whitelist Synology Drive Client and your NAS address in your firewall/antivirus settings.
  • Turn the firewall back on — safety first!

Note: Don’t keep the firewall off. Just adjust it.

Step 7: Delete Cache and Reinstall the Client (if needed)

Still stuck? Try a good ol’ reinstall.

  1. Uninstall the Synology Drive Client.
  2. Before reinstalling, go to this folder and delete the cache:
    C:Users[YourName]AppDataLocalSynologyDrive
  3. Then download and install the latest client from Synology’s website.

Step 8: Try a Different Sync Task

If all else fails, the specific sync task you made may be broken.

  • Open the Synology Drive Client.
  • Remove the current task and create a brand new one.
  • Select a different folder to sync and test if it works.

If the new task works, your original one might’ve hit a corrupt file or folder. Time to clean house!

Bonus Tip: Check System Logs

Once you’re inside DSM (your NAS’ dashboard), go to:

  • Log Center > Logs

This can give you juicy details about what’s been going wrong. Search/filter the logs for “Drive” or “1000” and see what pops up.

If You’re a Tech Enthusiast…

You can enable SSH on your NAS and dig into the logs directly through the terminal. But that’s a rabbit hole for another day. If you’re reading this guide, we’re keeping it simple. 😊

When All Else Fails: Contact Synology Support

If you’ve tried everything and are still seeing Error Code 1000, don’t be shy — open a support ticket!

  • Use DSM’s built-in Support Center to submit a ticket.
  • Describe what you’ve tried so far and include logs/screenshots.

Pro Tip: The more info you give them, the faster they can help.

Quick Recap

Let’s revisit what you learned!

  1. Check that you’re online and can see your NAS.
  2. Update all software (Drive Client and NAS).
  3. Reconnect your Drive Client account.
  4. Make sure your user has the right permissions.
  5. Watch out for overprotective firewalls.
  6. Try a reinstall and clear the cache.
  7. Create a new sync task if all else fails.

Error Code 1000 can be annoying, but it’s not unbeatable. Now you’ve got the power to tackle it head-on. 💥

Happy syncing! 🎉

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