How to fix ERR_SSL_VERSION_OR_CIPHER_MISMATCH when accessing websites on Windows?

Open https://web.snapchat.com directly; if it works while https://snapchat.com fails, the problem is limited to the main-domain redirect or how the network handles that path, not a general lack of Snapchat browser support.^1^

Because the date/time is already correct and the error occurs across browsers, focus on system-wide TLS settings, security software, proxy/VPN configuration, and the network.

1. Isolate the PC from the current network

Connect the PC temporarily to another network, preferably a phone hotspot, and test the affected site again.

• Works on the hotspot: The router, DNS service, network filter, or HTTPS inspection on the original network is interfering with TLS.
• Fails on both networks: Continue with the Windows checks below.
• Work or school network: Ask the administrator whether a proxy, TLS inspection, or injected certificate policy applies.

Also test the same site from another device on the original network. If multiple devices fail there, troubleshoot the router or contact the network provider rather than changing Windows TLS settings.

2. Remove HTTPS interception temporarily

1. Open Settings → Network & internet → Proxy.
2. Turn off Use a proxy server if it is enabled and not required by your organization.
3. Disconnect any VPN.
4. In third-party antivirus/security software, temporarily disable only features named HTTPS scanning, encrypted traffic scanning, web shield, or similar.
5. Retest, then re-enable protection.

Do not leave antivirus or firewall protection disabled. If disabling encrypted-traffic inspection fixes the error, update or reinstall that security product, or configure its HTTPS-scanning feature correctly. Proxy, VPN, and security software can affect traffic across multiple browsers.^2^

3. Update Windows and Edge

1. Go to Settings → Windows Update → Check for updates.
2. Install available updates and restart Windows.
3. In Edge, open edge://settings/help.
4. Allow Edge to update, then restart it.^3^

An Edge InPrivate test can additionally exclude Edge extensions and profile data, but because other browsers also fail, a browser-only issue is less likely.

4. Check for customized TLS cipher policy

Windows 11 normally has modern cipher suites enabled. A configured SSL Cipher Suite Order overrides the default order, and suites omitted from that policy are unavailable.^4^

Open PowerShell and inspect the enabled suites:

Get-TlsCipherSuite |
    Select-Object -ExpandProperty Name |
    Sort-Object

On Windows 11 Pro, Enterprise, or Education, check:

Local Group Policy Editor → Computer Configuration → Administrative Templates → Network → SSL Configuration Settings → SSL Cipher Suite Order

• If it is Not configured, leave it unchanged.
• If it is configured on a personal PC, return it to Not configured only if you know the policy was added manually.
• On a managed PC, do not change it; give the administrator the affected domains and error.
• gpedit.msc is normally unavailable on Windows 11 Home.

Do not enable SSL 3.0, TLS 1.0, TLS 1.1, or insecure TLS fallback to fix modern public websites. Microsoft recommends removing TLS 1.0/1.1 dependencies because those protocols are obsolete and insecure.^5^

5. Reset networking only as the final local repair

If the error persists on multiple networks and no proxy, VPN, inspection software, or TLS policy explains it:

1. Open Settings → Network & internet → Advanced network settings → Network reset.
2. Select Reset now → Yes.
3. Let Windows restart, reconnect to the network, and retest.

Network reset removes and reinstalls network adapters and restores their settings to defaults. It can require reinstalling VPN clients or virtual switches afterward.^6^

If only one website still fails after these tests—and it also fails from other devices or networks—the website/CDN must correct its server-side TLS configuration.

References

1. Snapchat for Web
2. Internet not working for several applications and websites - Microsoft Q&A
3. [Windows 11](https://support.microsoft.com/edge/troubleshooting-tips-for-downloading-installing-and-updating-microsoft-edge#troubleshoot-issues-with-updating-microsoft-edge)
4. TLS Cipher Suites in Windows 11 v22H2 and later
5. KB5017811—Manage Transport Layer Security (TLS) 1.0 and 1.1 after default behavior change on September 20, 2022 | Microsoft Support
6. [Windows 10](https://support.microsoft.com/windows/experience/connectivity-networking/fix-wi-fi-connection-issues-in-windows#general-troubleshooting)