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| VPN Keeps Disconnecting While Working From Home |
A VPN that drops every twenty minutes doesn't just interrupt your work — it can lock you out of files mid-edit, kill an in-progress upload, or boot you from a call routed through the company network. If this happens repeatedly rather than occasionally, the cause is almost always identifiable, and most fixes don't require IT involvement at all.
Why VPNs Disconnect More at Home Than at the Office
Office networks are built specifically to support VPN traffic, wired, stable, and free of the interference and shared-bandwidth issues common in homes. A home network introduces several new variables at once: WiFi instead of ethernet, a consumer-grade router instead of enterprise networking equipment, and a connection shared with everyone else in the house. Any one of these can be the culprit, so the fix depends on correctly identifying which one applies to you.
Step 1: Determine When the Drops Happen
Pay attention to the pattern for a day or two before changing anything:
- Drops after a period of inactivity point to a sleep or power-saving setting closing the connection.
- Drops when you move around the house point to WiFi signal strength.
- Drops at consistent times of day point to network congestion, similar to the WiFi slowdown pattern covered in our home WiFi guide.
- Drops specifically when your laptop screen locks point to your operating system suspending network activity to save power.
This single observation usually narrows the fix to one of the sections below.
Step 2: Stop Your Laptop From Sleeping the Network Connection
This is the single most common cause and the easiest to miss. Most laptops are configured by default to reduce power to network adapters when idle or when running on battery, which silently kills VPN connections that rely on a continuous link.
On Windows: Go to Device Manager → Network adapters → right-click your WiFi adapter → Properties → Power Management tab, and uncheck "Allow the computer to turn off this device to save power."
On macOS: Under Energy Saver or Battery settings, disable "Put hard disks to sleep when possible" is unrelated, but check System Settings → Battery → Options for anything referencing network activity during sleep, and ensure "Wake for network access" is enabled.
If your laptop is company-managed, this setting may be locked by policy — in that case, raise it directly with IT, since it's a known and common fix they'll likely recognise immediately.
Step 3: Switch to a Wired Connection
If drops correlate with movement around the house or happen more on days you're further from the router, WiFi signal instability is the likely cause. VPN connections are less tolerant of brief signal drops than ordinary browsing, because the encrypted tunnel needs a continuous connection to stay authenticated — a WiFi hiccup that a web page would silently retry through can be enough to sever a VPN session entirely.
An ethernet cable removes this variable completely. If running a cable to your desk isn't practical, a powerline networking adapter is a reasonable alternative, though quality varies by home wiring.
Step 4: Check for Conflicting VPN or Network Software
If you've ever installed a personal VPN, antivirus software with a built-in VPN or firewall component, or aggressive ad-blocking software, these can conflict with your work VPN client. Two VPN-type services rarely coexist cleanly on the same machine, because both attempt to control the same network routing table.
What to check:
- Confirm no personal VPN app is running simultaneously with your work VPN
- Temporarily disable third-party firewall or antivirus software one at a time to test whether disconnections stop
- Check whether your antivirus software has a "network protection" or "VPN" feature that might be intercepting traffic
If disabling one of these resolves the issue, you've found your cause — the long-term fix is either configuring an exception for your work VPN client in that software's settings, or choosing one or the other rather than running both.
Step 5: Investigate Router-Level Interference
Some consumer routers include a feature that interferes with VPN traffic without the user realising it, often labelled SPI Firewall, VPN Passthrough, or aggressive QoS (Quality of Service) settings that deprioritize VPN traffic without you configuring it to. Check your router's admin panel for these settings.
- Ensure VPN Passthrough (sometimes listed separately for IPSec, PPTP, or L2TP) is enabled if your router has this option
- If QoS is enabled and configurable, consider setting your work computer's priority higher, or disabling QoS temporarily as a test
- Update your router's firmware — some manufacturers have shipped firmware versions with known VPN-handling bugs that were later patched
Step 6: Consider ISP-Level Interference
Rarely, some internet service providers apply traffic shaping that specifically affects VPN protocols, particularly on lower-tier residential plans. This is uncommon but worth ruling out if none of the above resolves the issue.
How to test: If possible, connect your laptop directly to your modem via ethernet, bypassing your router entirely, and see if the VPN remains stable for an extended period. If it does, the router is implicated. If drops continue even with a direct modem connection, contact your ISP and describe the specific symptom — persistent VPN disconnection is specific enough that most ISP support teams can check for known traffic-shaping issues on your line.
Step 7: Confirm It's Not the VPN Service Itself
If your company's VPN client has a status or log window, check it after a disconnection — it often states a specific reason such as "authentication timeout" or "server unreachable," which points directly at a fix rather than leaving you guessing. A pattern of drops affecting multiple people on your team at the same time usually indicates a server-side issue on your company's end rather than anything in your home setup, which is worth mentioning to IT with a timestamp.
Quick Diagnostic Summary
| Symptom | Likely cause | First fix |
|---|---|---|
| Drops after inactivity or screen lock | Power-saving network adapter setting | Disable adapter sleep setting |
| Drops when moving around the house | WiFi signal strength | Switch to ethernet |
| Drops at consistent daily times | Network congestion | See home WiFi congestion guide |
| Drops right after installing security software | Software conflict | Test with software disabled |
| Drops even connected directly to modem | ISP-level issue | Contact ISP with specifics |
| Multiple teammates affected simultaneously | Server-side VPN issue | Report to IT with timestamp |
If your laptop and VPN client are managed by your employer, always check with your IT team before changing adapter, firewall, or antivirus settings — some of these may be governed by company policy.