0x0000363c – Error_Ipsec_Ike_Qm_Limit – Reached Maximum Quick Mode Limit for the Main Mode. New Main Mode Will Be Started

The error "0x0000363c" means that the network has too many secure connections open at once, which stops new ones from starting.

This can happen if there are too many users connected or if the VPN settings are not right. As a result, users might lose their VPN connections and have trouble using the internet.

To fix this, you can adjust the settings, limit the number of active connections, and keep your VPN software updated.

Understanding this error is important for keeping the network safe and working well. Learning how to prevent it can help avoid future problems.

Error meaning:

The "Error_Ipsec_Ike_Qm_Limit" means that a network has reached its limit for setting up secure connections.

This prevents new secure sessions from starting until the current ones finish or are stopped, causing possible connectivity problems.

Causes:

Potential reasons for the "Error_Ipsec_Ike_Qm_Limit" issue:

1. Too many Quick Mode Security Associations (QM SAs) are being used.
2. VPN settings are not set up correctly.
3. There are too many people trying to connect at the same time.
4. Network devices do not have enough resources to handle all the connections.
5. Firewall rules are blocking important traffic needed for Quick Mode connections.

Symptoms:

Symptoms of the "Error_Ipsec_Ike_Qm_Limit" issue:

• VPN connection may drop unexpectedly.
• Difficulty in starting new VPN sessions.
• Error messages about reaching the maximum limit for Quick Mode.
• Slower data transfer rates during VPN use.
• Increased delay (latency) while using the VPN.
• Problems authenticating or setting up secure connections.
• Limited access to important network resources.

Solutions:

Step 1: Check your IPSec settings to make sure they match what your network needs.

Step 2: Change the settings on your VPN devices to allow more Quick Mode negotiations.

Step 3: Look at the active connections and close any that are not needed.

Step 4: Set a time limit for sessions so they don't take up Quick Mode slots for too long.

Step 5: Keep your VPN devices' software updated to avoid problems in the future.

Step 6: After making these changes, monitor your network to ensure everything is working smoothly.

Impact:

Impact of Ignoring IPSec IKE Quick Mode Limits:

1. Connection Delays: It takes longer to set up secure connections.
2. Slow Network: The entire network performance can drop.
3. Increased Latency: There can be noticeable lag when using applications.
4. Intermittent Access: Users might not be able to reach important apps consistently.
5. Security Risks: Important safety protocols might not work properly, putting the network at risk.
6. User Dissatisfaction: Frustration can grow among users due to constant connection issues.

Relevance:

Understanding the limits of IPSec IKE Quick Mode is important for keeping networks secure and running well.

Quick Mode is part of the Internet Key Exchange (IKE) protocol, used in Windows operating systems like Windows Server 2008, Windows 7, and newer versions.

When the maximum number of connections is reached, it can cause problems with how sessions are managed. This might slow down the network and make it harder for users to connect or use applications.

If too many connections happen at once, it could mean there are issues with the network setup or too much traffic that needs fixing. Knowing these limits helps network managers keep things running smoothly and securely.

Prevention:

To avoid encountering errors with IPSec IKE Quick Mode in the future, follow these simple steps:

1. Check VPN Settings Regularly: Look at your VPN settings often to find and fix problems early.
2. Limit Active Sessions: Create rules to keep the number of active Quick Mode sessions low.
3. Set Timeouts: Adjust timeout settings so that sessions don't stay active longer than needed.
4. Adjust Parameters: Change Quick Mode settings, like the lifetime of IPsec Security Associations, to prevent too many sessions.
5. Review Network Traffic: Look at network usage often to spot trends and make changes if needed.

Following these steps will help keep your network running smoothly!

People Also Ask

What Devices Are Commonly Affected by This Error?

Devices that often have this error are routers, firewalls, and VPNs that use IPsec for safety. They can have problems with too many connections or setting up secure links, which can slow down the network.

How Can I Check the Current Quick Mode Limit?

To find out the current quick mode limit, go to your device's settings. Look for the IPsec or VPN section. There, you can see the limit. You can also check the device's user manual for more details.

Is This Error Specific to Certain Network Configurations?

Yes, this error can happen with some network setups, especially with IPsec VPNs. Things like how many devices are connected at the same time, what the devices can do, and the rules set up can affect if this error shows up.

Can Software Updates Resolve This Issue?

Yes, software updates can help fix this problem. They can fix bugs, make your device work better with networks, and improve overall performance. It's a good idea to check for updates often to keep everything running smoothly and safely.

What Is the Role of IPSEC in This Error?

IPsec helps keep data safe by encrypting it. The error shows there's a problem with Quick Mode, which means it needs to start a new Main Mode to keep the communication secure.