Outlook does not choose its own road to the server. It uses the connection Windows gives it — proxy, VPN and all. When that road is slow, every click in Outlook pays the toll, and the Contacting the Server dialog is the receipt.
Here is the puzzle this page solves: the internet works, the browser is fast, yet Outlook stalls on every message. The browser and Outlook do not always travel the same road. Outlook talks to the mail server continuously and leans on the Windows system proxy settings and tools like Autodiscover working correctly — a proxy that answers slowly, a VPN that routes mail the long way, or a network that blocks the server's ports will stall Outlook while web pages load happily.
Disconnect the PC from its current network — unplug the cable or turn off Wi-Fi — and connect it to a phone hotspot instead. Open Outlook and repeat the work that stalls. If Outlook is suddenly instant, nothing on the PC is broken: the original network path is the slow part, and every fix below is about that path. If it stalls identically on the hotspot, the cause is on the PC (add-ins, profile or content) and this is the wrong guide — the fix-order page routes you correctly.
A VPN can be the problem in two opposite ways. If your mail server is an office Exchange server, Outlook may need the VPN up to reach it at all — a dropped VPN means a stall until it reconnects. If your mail is Microsoft 365, the VPN usually adds a long detour: your Outlook traffic travels to the office and back out to Microsoft. Test with the VPN disconnected on the hotspot. If 365 mail flies without the VPN, ask your IT team about split tunnelling for Microsoft 365 traffic — it is a standard, documented optimisation, not a hack.
Outlook follows the proxy set in Windows. Open Settings → Network and Internet → Proxy. A leftover manual proxy from an old office, a hotel tool or old software can send every Outlook request to a server that no longer exists — and Outlook waits out the full timeout each time. If a manual proxy is listed and you do not know why, note what it says, turn it off, and test. On a company PC this setting may be managed; if it reappears, it is set by policy and belongs to IT.
Some networks block or inspect the connections Outlook needs, especially on guest Wi-Fi. The symptom is familiar: the same laptop stalls at the office or a hotel but flies at home. There is no Outlook setting that changes a network's rules. The honest actions are to use the network meant for staff, connect the company VPN if one is provided for this purpose, or use webmail on that network and Outlook on a healthy one.
Stalls in the first minutes after opening a laptop are often just reconnection: Wi-Fi rejoins, the VPN rebuilds, and Outlook re-establishes its server session in that order. If your stalls cluster right after waking the machine and fade within minutes, you are watching three systems wake up, not one broken program. Give it a moment, and check the status bar: once it reads Connected, the dialog should stop appearing.
The video runs the hotspot split test on a real stalling laptop, so you can see how quickly the verdict arrives when the road is the problem.
Watch Full VideoBrowsers mostly fetch from many fast public servers and cache aggressively. Outlook holds a constant conversation with one mail server and is sensitive to proxy delays and VPN routing on that specific path. Different roads, different weather.
Tell them the exact split test result: same laptop, same account, instant on a hotspot, stalling on the office network. Mention whether the VPN is on or off in each case. That narrows their check to the proxy, firewall or VPN route for mail traffic.
Classic Outlook uses the Windows system proxy and does not offer its own proxy setting. That is by design. It is also why a stale system proxy quietly breaks Outlook while other apps that ignore it keep working.