When connecting your Instagram account to ZyloChat, you might occasionally encounter the “400 Session Invalid” error. This error is common across many automation platforms and usually stems from issues related to your Instagram session, browser cache, or network conditions.

In this blog, we’ll walk you through why this error occurs and step-by-step troubleshooting methods to fix it and get your ZyloChat–Instagram integration running smoothly again.

🔍 Why You See the “400 Session Invalid” Error

This error usually means Instagram is not allowing the platform (like ZyloChat or others) to complete the connection process. Reasons may include:

• Instagram session has expired

• Session token mismatch

• Too many login attempts or switches between accounts

• Cached data conflicting with the login flow

• Using a network Instagram considers risky (like public Wi-Fi or VPNs)

✅ Step-by-Step Troubleshooting for ZyloChat 1. Refresh Your Instagram Session

Sometimes the session token expires. Here’s how to refresh it:

• Log out of Instagram on all devices.

• Log back in from a clean browser tab (preferably incognito/private mode).

• Now try connecting Instagram via ZyloChat again.

2. Clear Browser Cache and Cookies

Corrupted cookies or cache data can interfere with session validation:

• Go to your browser settings

• Clear cache and cookies (select “All Time” for the time range)

• Restart the browser and try connecting again

3. Use Incognito/Private Browsing Mode

Incognito mode runs with a clean state — no cache or prior sessions:

• Open an incognito/private window

• Log in to Instagram

• Now connect Instagram to ZyloChat through this same window

4. Switch Your Network (Optional but Helpful)

Instagram may block requests from certain IPs or networks:

• Try connecting using a different Wi-Fi or a mobile hotspot

• Avoid using VPNs or proxy networks during the connection process

5. Ensure Instagram is a Professional Account

ZyloChat only supports Instagram business or creator accounts:

• Go to Instagram > Settings > Account > Switch to Professional Account

• Make sure your account is also linked to a Facebook Page

6. Enable the Instagram Channel in ZyloChat

Ensure you’ve enabled the Instagram channel inside ZyloChat:

• Go to ZyloChat Dashboard → Channels → Instagram

• Click Connect and follow the instructions

• Grant all necessary permissions when redirected to Facebook/Meta

7. Reauthorize ZyloChat from Facebook Business Integrations

Sometimes permissions need a refresh:

• Go to Facebook Settings > Business Integrations

• Remove ZyloChat

• Reconnect Instagram from ZyloChat and allow all requested permissions

💬 Still Facing the Issue?

If none of the above methods resolve the issue:

• Double-check that your Instagram and Facebook accounts are properly linked

• Contact our support team at contact@zylochat.com with screenshots and your Instagram username for faster assistance

🛡️ Pro Tips to Avoid This in the Future

• Always use stable networks and avoid switching accounts frequently.

• Don't revoke permissions on Meta unless necessary.

• Regularly clear cache or use incognito when managing multiple accounts.

🚀 Wrapping Up

While the “400 Session Invalid” error can be frustrating, it’s usually easy to resolve with a few simple steps. At ZyloChat, we’re constantly working to make our integrations smoother and more reliable. If you're stuck, our support team is just a message away.

Stay connected, stay automated 💬✨
— Team ZyloChat