Fix UniFi Network Controller not appearing after upgrade

draft · network wifiunifilogmein

Generated by docuprocessor (prompt article/v3) · 2026-04-22 07:07

Source thread

thread_id: spaces/AAAA05BdS6s/threads/4neW0cQ0XaI · 13 msgs · first 2024-05-30 · participants: Tech ATech B

Tech A 2024-05-30 17:00

Guys, quick question: I'm working with PDS PLATTSBURGH, they are having some issues with the wifi so I want to reboot the AP's, I tried to open the ubiquiti network manager, but the app was not showing up. I copied the ubiquiti folder before upgrading the app, and I will restore a backup from the folder, its from 12/11/2023. If I restore this backup, will be any change at the moment that I do that? will the aps reboot or something?

image/png image.png

**On-screen dialog box titled "Restore from backup"** is displayed, prompting: *"Are you sure you want to restore the settings from 6.5.55.unf created at 12/11/2023 9:15 AM for version 6.5.55?"* Two action buttons are visible: **Cancel** and **Confirm** (Confirm is highlighted in dark/active state).

Tech B 2024-05-30 17:15

sometimes the java process gets stuck in the background and needs to be killed. Have you tried that?

Tech A 2024-05-30 17:45

Nope, but the app was not showing up, I tried to search it by windows search, by the folders at the c: disk, but nothing appeared

Tech A 2024-05-30 17:46

Is it OK if I restore that backup? I'm not sure if the devices will be down after that

Tech B 2024-05-30 17:49

can I take a look before u do that?

Tech A 2024-05-30 17:49

Yes, sure

Tech B 2024-05-30 17:49

server?

Tech A 2024-05-30 17:49

PDS PLATTSBURGH - PLATT-SVR

Tech B 2024-05-30 17:55

this is the process I was talking about.

image/png image.png

**Task Manager – Details Tab (via LogMeIn Remote Session)** The Details tab shows `mongod.exe` (PID 13704, Status: Running) highlighted with a red box, with the associated **User name listed as "DentalHT"** (also highlighted). Additional visible processes include ManagementServer, Microsoft.ActiveDirecte, msdtc.exe, Novabackx.exe (two instances), NovaFUSION.exe, NovaFUSION.Service, nsCtrl.exe, nsService.exe, piusvc.exe, ramaint.exe, Registry, and rundll32.exe — running under various accounts including SYSTEM, NETWORK, Administr..., and DentalHT. Desktop shortcuts visible in the background include **Ormco-DXT**, **Microsoft Network**, **MyAlignTech**, **DataGrabber**, **Practice Intelligen...**, **netscan.exe**, and **SIDEXIS**.

Tech B 2024-05-30 17:55

also, I am logged in as Administrator but the process is started as DentalHT. Unifi only works under the user it was installed for.

Tech B 2024-05-30 17:56

After killing that process and logging off DentalHT account, I was able to start the Unifi Controller

image/png image.png

The UniFi Network Server application window displays the message **"UniFi Network Server (8.0.7) started."** accompanied by a green checkmark icon, indicating successful startup. The application is copyrighted 2005–2023 by Ubiquiti Inc. In the background, a process list is partially visible showing entries with statuses of **"Running"** and **"Suspended,"** with memory values including **160,784 K**, **308 K**, and **6,208 K**, all under SYSTEM or Administrator accounts with **"Not allowed"** permissions noted.

Tech B 2024-05-30 17:57

I left it open for you on the server

image/png image.png

**UniFi Network Dashboard (Self-Hosted, v8.0.7)** running locally at `127.0.0.1:8080`, Server IP `172.17.178.10`, System Uptime `1m 48s`. Two active access points visible: **UAP-nanoHD** (highlighted/selected) and **UAP-AC-Pro**; six active clients shown including two labeled **PLATT-**, one **SonosZP**, and others identified by MAC addresses. Signal Strength Session Times bar shows distribution of **17% at -90 dBm**, **48.4% at -80 dBm**, **26.6% at -70 dBm**, and **8% at -40 dBm**; Radio TX Retries panel displays values of **1**, **2**, and **1** across segmented bars with a total count of **2**.

Tech A 2024-05-30 17:58

Didn't know about it, thanks !

---
title: "Fix UniFi Network Controller not appearing after upgrade"
category: network
tags: ["wifi", "unifi", "logmein"]
source_thread_id: "spaces/AAAA05BdS6s/threads/4neW0cQ0XaI"
source_space: "spaces/AAAA05BdS6s"
generated_at: "2026-04-22T07:07:29"
participants: ["Tech A", "Tech B"]
---

# Fix UniFi Network Controller not appearing after upgrade

## Problem

After upgrading the UniFi Network Controller application, the software was not showing up in Windows search or in the file system folders. The controller appeared to be completely missing, preventing access to manage wireless access points. The issue occurred at a client office where WiFi troubleshooting was needed but the UniFi management interface was inaccessible.

## Resolution

1. Open Task Manager and navigate to the Details tab
2. Look for the `mongod.exe` process (MongoDB service used by UniFi)
3. Check which user account is running the process - it may be running under a different user account than the one currently logged in
4. Kill the `mongod.exe` process
5. Log off the user account that was running the MongoDB process (if different from current user)
6. Start the UniFi Network Controller application - it should now launch successfully

The UniFi Controller only works properly when run under the same user account it was originally installed for. If the MongoDB backend process is running under a different user account, the controller interface will not be accessible.

## References

- Source discussion: `spaces/AAAA05BdS6s/threads/4neW0cQ0XaI`
- Attachments:
  - ![image.png](../attachments/4neW0cQ0XaI.4neW0cQ0XaI/image.png) — **On-screen dialog box titled "Restore from backup"** is displayed, prompting: *"Are you sure you want to restore the settings from 6.5.55.unf created at 12/11/2023 9:15 AM for version 6.5.55?"* Two action buttons are visible: **Cancel** and **Confirm** (Confirm is highlighted in dark/active state).
  - ![image.png](../attachments/4neW0cQ0XaI.AKd0f3rwZgY/image.png) — **UniFi Network Dashboard (Self-Hosted, v8.0.7)** running locally at `127.0.0.1:8080`, Server IP `172.17.178.10`, System Uptime `1m 48s`. Two active access points visible: **UAP-nanoHD** (highlighted/selected) and **UAP-AC-Pro**; six active clients shown including two labeled **PLATT-**, one **SonosZP**, and others identified by MAC addresses. Signal Strength Session Times bar shows distribution of **17% at -90 dBm**, **48.4% at -80 dBm**, **26.6% at -70 dBm**, and **8% at -40 dBm**; Radio TX Retries panel displays values of **1**, **2**, and **1** across segmented bars with a total count of **2**.
  - ![image.png](../attachments/4neW0cQ0XaI.E3-fJiauSj0/image.png) — The UniFi Network Server application window displays the message **"UniFi Network Server (8.0.7) started."** accompanied by a green checkmark icon, indicating successful startup. The application is copyrighted 2005–2023 by Ubiquiti Inc. In the background, a process list is partially visible showing entries with statuses of **"Running"** and **"Suspended,"** with memory values including **160,784 K**, **308 K**, and **6,208 K**, all under SYSTEM or Administrator accounts with **"Not allowed"** permissions noted.
  - ![image.png](../attachments/4neW0cQ0XaI.fLZ6kazkzZA/image.png) — **Task Manager – Details Tab (via LogMeIn Remote Session)**

The Details tab shows `mongod.exe` (PID 13704, Status: Running) highlighted with a red box, with the associated **User name listed as "DentalHT"** (also highlighted). Additional visible processes include ManagementServer, Microsoft.ActiveDirecte, msdtc.exe, Novabackx.exe (two instances), NovaFUSION.exe, NovaFUSION.Service, nsCtrl.exe, nsService.exe, piusvc.exe, ramaint.exe, Registry, and rundll32.exe — running under various accounts including SYSTEM, NETWORK, Administr..., and DentalHT. Desktop shortcuts visible in the background include **Ormco-DXT**, **Microsoft Network**, **MyAlignTech**, **DataGrabber**, **Practice Intelligen...**, **netscan.exe**, and **SIDEXIS**.

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