Universal Print connector offline — proxy & service account repair
Joe B.
Expert ★★★★★ 27,853 satisfied customers
Specialities: Microsoft 365 printing, Universal Print connector, Azure AD / Microsoft Entra ID, hybrid cloud print servers, secure proxy & firewall policies
Universal Print connector shows Offline — proxy authentication, firewall endpoints & service account permissions
Technician
• Where is the **Universal Print connector** installed (Windows Server / Windows 10/11 / Azure VM)?
• In the **Universal Print admin center**, does it show **Offline**, **Unhealthy**, or “Can’t reach connector”?
• Is this connector behind a **corporate proxy / web filter** (Zscaler, Blue Coat, Palo Alto, Cisco, etc.) or straight to the internet?
• Do you sign the connector in with a **service account** (Printer Administrator / Global Administrator) or a normal user with MFA?
Technician
1) The **Windows service** can’t reach Universal Print URLs because of **proxy / firewall / TLS** issues.
2) The connector’s **service account** lost permissions in **Microsoft Entra ID (Azure AD)** or is now forced to use MFA.
3) The connector host stopped meeting requirements (sleeping, reboot loop, old connector version).
The connector runs as a Windows service and uses **WinHTTP** / system proxy, not the logged-on user’s browser proxy. So the server can browse the web, but the **UPConnectorSvc** can still be blocked. We’ll:
• Check the connector service & version.
• Fix **proxy configuration** for the Local System / service account.
• Make sure required **Universal Print endpoints** are allowed through the firewall.
• Re-establish sign-in with a suitable **Printer Administrator** account if needed.
Technician
Step 1 — Configure proxy for the connector’s security context
By default the connector runs as **Local System**, and Microsoft’s guidance is that if you use a proxy, you must set proxy settings for that account (not just for your admin user).
On the connector host:
1) Open an **elevated Command Prompt**.
2) Run a WinHTTP check:
netsh winhttp show proxy• If it shows **Direct access**, the service has no proxy configured.
3) Use the supported method to set proxy for **LocalSystem**, for example with **BITSADMIN** as Microsoft documents:
bitsadmin /util /setieproxy localsystem MANUAL_PROXY proxyserver:port "<local>"(Replace
proxyserver:port with your actual proxy host/port.)4) Restart the **Universal Print connector service** from Services.msc.
After that, refresh the **Universal Print admin center → Connectors** page and see if the status changes from Offline to Online within a minute or so.
Technician
Step 2 — Use a proper Universal Print service account
For a stable **Universal Print connector Online** status, Microsoft recommends:
• Sign in the connector with a dedicated **cloud account** that has the **Printer Administrator** role (or Global Admin, temporarily).
• Do **not** enforce interactive MFA or risky sign-in policies on this service identity.
• Make sure the account has an appropriate **Universal Print license** if required by your subscription.
On the connector host:
1) Open the **Universal Print connector** app.
2) Sign out of the current user, then sign in as the dedicated **UP service account**.
3) In **Entra admin center → Roles & administrators**, confirm it has the **Printer Administrator** role and isn’t subject to a risky conditional access policy.
Once that’s in place, the authentication errors to **login.microsoftonline.com** should disappear and the connector should start reporting **Online**.
Technician
Step 3 — Allow Universal Print URLs through proxy / firewall
In your outbound rules and proxy, make sure this server (and its service account) can reach at least:
•
https://print.print.microsoft.com•
https://register.print.microsoft.com•
https://discovery.print.microsoft.com•
https://notification.print.microsoft.com• Microsoft sign-in endpoints like
https://login.microsoftonline.com and https://graph.microsoft.comThese should be allowed on **port 443**, with SSL inspection either disabled or configured to trust your organization’s inspection certificates on the connector host. After updating your allow lists, restart the **Universal Print connector service** again and watch the status in the admin center for 2–3 minutes.
Technician
Step 4 — Keep the connector host healthy & up to date
Microsoft’s guidance for a reliable **Universal Print connector** is:
• Run it on a server or always-on workstation — **no sleep / hibernate** policies.
• Avoid scheduled tasks that restart the connector host during business hours.
• Keep the **Universal Print connector version current** (install latest from Microsoft and re-register if it’s very old).
• Check **Event Viewer → Applications and Services Logs → Universal Print** for recurring crashes or token refresh errors.
If the connector was originally installed on an old OS or image and repeatedly crashes, it’s often faster to **install a fresh connector** on a clean server, move the printers to that connector, and decommission the flaky one.
Technician
Best practices Microsoft calls out:
• Avoid **image cloning** of machines with a registered connector; each connector host should be a unique install and registration.
• Don’t have multiple connectors fighting over the same on-prem printer unless you’re deliberately designing **high availability** and understand the topology.
What I’d do:
1) Pick one VM to be your **primary connector host**.
2) On the “extra” VM, uninstall the connector and remove that connector entry from the **Universal Print admin center → Connectors** list.
3) On the primary VM, ensure only **one connector instance** is installed and all printers are registered through it.
That removes duplicate connectors and cleans up any conflicting registrations.
Technician
• Document the dedicated **service account**, its role (Printer Administrator), and the **no-MFA / CA exception**.
• Save the **proxy / firewall configuration** that applies to the connector host, including the list of **Universal Print endpoints**.
• Add a simple monitoring check for the **connector status** in the admin center (Online vs Offline) and alert if it’s down for more than a few minutes.
• If you expand later, follow Microsoft’s architecture guidance for **multiple connectors** and connector groups instead of cloning servers.
If you’d like, we can walk through your exact Entra / proxy / firewall rules in a **1:1 session** and produce a short runbook for your team — just open the chat.
Technician
Quick answer: the accepted fix
Accepted fix when a Universal Print connector shows Offline: configure **proxy** for the Local System / connector service account, allow Universal Print **HTTPS endpoints** through the firewall, sign the connector in with a dedicated **Printer Administrator** account without MFA, keep the connector host always on, and remove cloned or duplicate connectors that share the same printers.
Why a Universal Print connector goes Offline (proxy, endpoints & service identity)
A **Universal Print connector** is a small Windows service that bridges on-premises printers to **Microsoft 365 / Entra ID**. It must maintain a secure outbound connection to Microsoft’s cloud. If your organization forces traffic through an **authenticated proxy**, inspects SSL, or blocks required **Universal Print URLs**, the connector can’t refresh tokens or talk to the service and therefore reports **Offline** in the admin center.
Similarly, if the connector was registered with a user that later gets **MFA enforced**, loses the **Printer Administrator** role, or is disabled, the **cloud registration breaks** even though the Windows service still appears to be running. That’s why most stable deployments rely on a dedicated **service account** with the right role and carefully documented **conditional access exclusions** for Universal Print.
How to confirm your Universal Print connector is healthy
Once you’ve repaired the **proxy** and **service account**, validate the connector end-to-end:
1) In the Universal Print admin center, open Connectors and confirm the status is **Online**, with no recent error messages.
2) Check **Printers → Registered printers** and ensure each printer shows a healthy connector and “Ready”.
3) On the connector host, review **Event Viewer → Applications and Services Logs → Universal Print** for any recurring connectivity or authentication warnings.
4) From a Windows 10/11 device joined to the same tenant, add a **Universal Print printer** and send a small test page. The job should appear in the printer’s queue on the connector host and then on the physical device.
If the status remains Online but jobs stall in “Pending”, you may be dealing with a **local print queue / driver** issue on the connector host instead of a cloud connectivity problem.
Universal Print connector Offline — quick troubleshooting tips
Most “connector Offline” cases are proxy configuration, blocked endpoints, or service account / MFA issues.
Quick path: verify the **Universal Print connector service** is running → set **WinHTTP / Local System proxy** correctly → allow required **Universal Print URLs** on your firewall → sign in with a **Printer Administrator** service account without MFA → remove cloned connectors. This resolves the majority of **Universal Print connector Offline** problems in hybrid print environments.
Disclaimer: This information is AI-generated and intended for general guidance only. For advice specific to your environment, please consult a verified expert on Whizz-Tech before making decisions.
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FAQ
Why does my Universal Print connector keep showing Offline?
Common causes are missing **proxy configuration** for the connector service, blocked **Universal Print endpoints** on the firewall, or a **service account** that now requires MFA or lost the Printer Administrator role.
Do I need a dedicated service account for the Universal Print connector?
It’s strongly recommended. Use a cloud-only account with the **Printer Administrator** role, avoid interactive MFA on that account, and document any **conditional access exclusions** used for Universal Print.
Which URLs must be allowed for Universal Print to work?
Allow outbound HTTPS to Universal Print endpoints such as print.print.microsoft.com, register.print.microsoft.com, discovery.print.microsoft.com, plus sign-in endpoints like login.microsoftonline.com and graph.microsoft.com, with **TLS 1.2** enabled.
Can I clone a VM that already has a Universal Print connector installed?
Cloning VMs with a registered connector is not recommended. It can lead to duplicate connectors and unstable **Online / Offline** status. Instead, install and register each connector on a fresh host.
Sources
- Microsoft Learn — Install and register the Universal Print connector
- Microsoft Learn — Universal Print FAQs (connectors, endpoints, requirements)
- Microsoft Learn — Plan your Universal Print architecture (connectors & topology)
Filed under: Network security / VPN / office policies (advanced)
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