---
title: "Unable to join any Planning Poker game - SSL Error"
canonical: "https://support.appfire.com/space/SUPPORT/1047069095/Unable%20to%20join%20any%20Planning%20Poker%20game%20-%20SSL%20Error"
format: markdown
---
If you're unable to join any Planning Poker game or create a new one but can still access the Planning Poker app itself, the issue might be due to your DNS cache.

| **On this page:**<br>> Macro (toc) |
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## Identifying the issue

1. **Check the Network Activity in Developer Tools:**
  - Open the Developer Tools in your browser and go to the **Network** tab.
  - Look for the request to `https://j-poker-production.lizardbrain.rocks/`.
  - Verify if the request reaches the app and receives a proper response. If not, you might see no Status Code or content in the Response tab.
  - **Example Images:**
    - Images showing successful network requests
    - Images showing network request issues
2. **Check Console Logs for Errors:**
  - Look in the **Console** tab of Developer Tools for the error: `ERR_SSL_PROTOCOL_ERROR`.

## Resolving the issue

If you encounter the symptoms above, or anything similar, it is likely due to a DNS cache problem. Follow these steps to resolve it:

### **Step 1: Flush DNS Cache**

#### **For Windows:**

- Press `Win + R` to open the Run window.
- Type `cmd` and press Enter.
- In the Command Prompt, enter: `ipconfig /flushdns`.
- You should see a confirmation message such as “Successfully flushed the DNS Resolver Cache.”

#### **For macOS:**

- Open **Terminal** (Launchpad > Terminal).
- Type: `sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder`.
- Enter your password if prompted, and the cache will be cleared.

### **Step 2: Clear SSL State**

#### **For Windows:**

- Open **Control Panel** and go to **Network and Internet**.
- Select **Internet Options**.
- Navigate to the **Content** tab and click **Clear SSL State**.
- You should see a confirmation message indicating that the SSL cache was cleared.

#### **For macOS:**

- Open the **Applications** folder and go to **Utilities**.
- Open **Keychain Access** and select **System**.
- Locate the SSL certificate associated with the problematic site (e.g., your Jira instance address).
- Select and delete the certificate (your system may ask for your username and password for confirmation).

Once these steps are complete, you should be able to use Planning Poker without any issues.