Reset Synology NAS credentials when access is denied

draft · equipment nas-loginpassword-resetsynologynetwork-share

Generated by docuprocessor (prompt article/v3) · 2026-04-22 11:03

Source thread

thread_id: spaces/AAAA05BdS6s/threads/zciw1I06aS0 · 11 msgs · first 2024-09-11 · participants: Tech ATech BTech CTech D

Tech A 2024-09-11 13:56

Hey guys, I'm trying to re-authenticate this user on \\hsdumbonas - but when trying to access it says access is denied, I tried already with multiple passwords but still no luck, any idea on what else can I do here?

image/png image.png

**Windows Security dialog box** is displayed in File Explorer, prompting for network credentials to connect to host **"hsdumbonas"** with the username pre-filled as **"HELLOSMILE\kids dental"** and a masked password entered. The dialog shows a red **"Access is denied."** error message, indicating the submitted credentials were rejected. The file path in the address bar reads **\\hsdumbonas\OpenDental**.

Tech B 2024-09-11 14:00

Its always the DNS problem (c) @Alex Kaplun

Tech C 2024-09-11 14:08

Is that a nas? Have you tried logging into its web interface?

Tech A 2024-09-11 14:17

I can get to the web interface, I tried some passwords but I'm not able to access

image/png image.png

The browser displays a Synology NAS web login page titled **"HSDumboNas"** at local IP address **192.168.16.48:5001** over HTTPS. The browser flags the connection as **"Not secure"** (red warning indicator in the address bar). The sign-in form shows a **Username field** with a red underline, indicating a validation or empty-field state; no password field is currently visible.

Tech C 2024-09-11 14:24

likely you're using the wrong password, or wrong username to login

Tech D 2024-09-11 14:26

They should have the same creds as woodside, try those or local domain admin creds

Tech A 2024-09-11 14:33

I'm trying with multiple from woodside and still no luck Kids dental hitech Itadmin dht admin administrator dentalht root admin23 All those usernames with their own password shown as bitrix, still stuck there, any idea of which password or username can I use?

Tech D 2024-09-11 14:35

if there is nova you could check in tab: device> look for NAS> properties.... But password will not be not visible

Tech A 2024-09-11 15:01

with the password doesn't work, do we have access to this? or does the office has to approve?

image/png image.png

The screen displays a **Synology NAS web interface** login prompt for a device named **"HSDumboNas"** with username **"dht"**, requesting multi-factor authentication via the **Secure SignIn** app with an **"Approve sign-in"** message. A **"Stay signed in"** checkbox is visible and unchecked. An **"Other sign-in methods"** link is available at the bottom of the dialog.

Tech D 2024-09-11 15:09

I don't think we usually set 2fa, that can mean the credentials you entered are wrong ( this is synology security for bruteforce) If there is actually associated acc try other method and there should be some @dentalht.com email. Otherwise the creds are not valid

Tech D 2024-09-11 15:11

have you tried: itadmin Password&*(

---
title: "Reset Synology NAS credentials when access is denied"
category: equipment
tags: ["nas-login", "password-reset", "synology", "network-share"]
source_thread_id: "spaces/AAAA05BdS6s/threads/zciw1I06aS0"
source_space: "spaces/AAAA05BdS6s"
generated_at: "2026-04-22T11:03:24"
participants: ["Tech A", "Tech B", "Tech C", "Tech D"]
---

# Reset Synology NAS credentials when access is denied

## Problem
A technician encountered "Access is denied" errors when attempting to connect to a Synology NAS at \\hsdumbonas through Windows File Explorer. The NAS web interface was accessible at 192.168.16.48:5001, but multiple username/password combinations failed. When valid credentials were eventually entered for username "dht", the system prompted for multi-factor authentication through the Secure SignIn app, indicating the account had 2FA enabled.

## Resolution
1. Access the NAS web interface directly by navigating to the device's IP address and port (e.g., 192.168.16.48:5001)
2. Try standard credential combinations used at related offices, including:
   - itadmin / Password&*(
   - Common usernames: admin, administrator, dht, root, dentalht
3. If NovaBackup is installed on the network, check Device > NAS > Properties for username hints (password will not be visible)
4. If 2FA prompts appear after entering credentials, this indicates the username/password are correct but require approval through the associated email account or Secure SignIn app
5. Use "Other sign-in methods" link if the primary 2FA method is unavailable
6. Check for associated @dentalht.com email accounts that may receive 2FA notifications

If credentials cannot be recovered through these methods, the office may need to provide access or reset the NAS administrator password directly.

## References
- Source discussion: `spaces/AAAA05BdS6s/threads/zciw1I06aS0`
- Attachments:
  - ![image.png](../attachments/zciw1I06aS0.Kt4h4qpzrHI/image.png) — The browser displays a Synology NAS web login page titled **"HSDumboNas"** at local IP address **192.168.16.48:5001** over HTTPS. The browser flags the connection as **"Not secure"** (red warning indicator in the address bar). The sign-in form shows a **Username field** with a red underline, indicating a validation or empty-field state; no password field is currently visible.
  - ![image.png](../attachments/zciw1I06aS0.u-IFK-DNSxE/image.png) — The screen displays a **Synology NAS web interface** login prompt for a device named **"HSDumboNas"** with username **"dht"**, requesting multi-factor authentication via the **Secure SignIn** app with an **"Approve sign-in"** message. A **"Stay signed in"** checkbox is visible and unchecked. An **"Other sign-in methods"** link is available at the bottom of the dialog.
  - ![image.png](../attachments/zciw1I06aS0.zciw1I06aS0/image.png) — **Windows Security dialog box** is displayed in File Explorer, prompting for network credentials to connect to host **"hsdumbonas"** with the username pre-filled as **"HELLOSMILE\kids dental"** and a masked password entered. The dialog shows a red **"Access is denied."** error message, indicating the submitted credentials were rejected. The file path in the address bar reads **\\hsdumbonas\OpenDental**.

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