> Source: [sk150175](https://support.checkpoint.com/results/sk/sk150175)

# sk150175 - Resources on some HTTPS websites get stuck for several minutes

| Property | Value |
|----------|-------|
| Solution ID | sk150175 |
| Date Created | 2019-03-29 |
| Last Modified | 2020-01-01 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |

## Symptoms

- * While browsing a Microsoft websites (For example: Azure), site will get stuck on a specific resource for several minutes, then show "200 OK" in the network tab on the browser, and finish loading.
* Issue does not get replicated with each attempt. Sometimes requires a few attempts while browsing the website. (Make sure to clean cache/browsing data on the browser.)

## Cause

The client sends data to the Security Gateway.

The Security Gateway sends a SYN to the server, and waits for the SYN-ACK.

In that time interval, the client will continue sending data to the Security Gateway.

This will trigger CPAS to send another SYN, which on Microsoft servers, might activate a protection for double SYN without RST. This causes the connection to freeze.

## Solution

This solution requires authentication. Please log in to view the full solution.

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