How to Fix VPN Application blocked by Java Security Error?

Problem

‘Application blocked by Java Security’ error dialog box prompt when attempt to connect VPN.

Solution 1: Add websites to exception list in Java

1. Go to Start > type Java control panel and press Enter key.
2. Go to Security tab. If Security Level is set to Very High then reduce it to High.
3. Click on Edit Site List button.
4. Click Add to type in the site URL.
5. In the highlighted line, type the URL and then click OK button.
6. After launching web browser and attempting the URL, Do you trust prompt will come up, tick Always trust boxes and then click OK.

Solution 2: Clear Java cache

1. Go to Start > type Java control panel and press Enter key.
2. Navigate to General tab, and click Settings under the temporary internet files section.
3. Click Delete Files on the temporary files settings dialog box
4. Click OK on the Delete Files and Applications prompt and follow the prompts.

Solution 3: Flush DNS

1. Go to Start > Type cmd.
2. Type ipconfig /flushdns and press Enter.

Solution 4: Clear web browser cache

1. Launch web browser e.g. Microsoft Edge
2. Press Ctrl + Shift + Delete to access Clear recent history dialog.
3. Under Time range to clear drop-down menu, select Everything.
4. Make sure to check Cache box. Click on Clear Now.

Note: Ctrl + Shift + Delete can also be used to clear cache on other web browsers.

Solution 5: Reinstall VPN Software

Solution 6: Install Windows updates

1. Go to Start > type windows update in the search box and then click on Windows Update to proceed.
2. Check for updates and install the available updates.
3. Restart PC after the update is completed.

Solution 7: Reinstall Java