Symptoms

You are able to load all web pages with the exception of secure sites

Cause

Firewall/Network Configuration
If the Cipher Strength is anything less then 128-bit.
Corrupted files in your Temporary Internet Files storage
Date and Time Settings are not correct

Resolution

Check Firewall/Network Configuration

Make sure that the SSL port (port 443) is open on your network/firewall (if you have any). There are many different Firewall/Network products, so we can't give step-by-step instructions. Check the documentation or help file of the product you use.

Verify that Internet Explorer Is Using 128-Bit Encryption

To check:

1. In Internet Explorer, on the Help menu, click About Internet Explorer
2. The level of encryption on your computer appears next to the words Cipher Strength. Verify that the Cipher Strength value appears as 128-bit

If the Cipher Strength is anything less then 128-bit, download the Internet Explorer High Encryption Pack to the computer's hard disk, and then install it.

Delete Temporary Internet Files

There's also a possibility of some corrupted files in your Temporary Internet Files (TIF) storage. To clear these:

1. In Internet Explorer, on the Tools menu, click Internet Options, and select the General tab
2. Under Temporary Internet files, click Delete Files, and click OK when you are prompted to confirm the deletion

Configure Internet Explorer Security, Content, and Advanced Settings

Configure Security settings for the Trusted sites zone in Internet Explorer:

1. In Internet Explorer, on the Tools menu, click Internet Options, and select the Security tab
2. Select Trusted sites, and then click Default Level
3. Add the secure Web site you are trying to access to the Trusted sites zone. To do so, click Sites, type the address (URL) of the site in the Add this Web site to the zone box, click Add, click OK, and then click Apply

Clear the Secure Sockets Layer (SSL) slate and AutoComplete history:

1. In Internet Explorer, on the Tools menu, click Internet Options, and select the Content tab
2. Under Certificates, click Clear SSL State
3. Click OK when you receive the message that the SSL cache was successfully cleared
4. Under Personal information, click AutoComplete
5. Under Clear AutoComplete history, click Clear Forms. Click OK when you are prompted to confirm the operation.

Verify that Internet Explorer is configured to use SSL 2.0 and SSL 3.0:

1. In Internet Explorer, on the Tools menu, click Internet Options, and select the Advanced tab
2. In the Settings box, under the Security header, click to select the Use SSL 2.0 and Use SSL 3.0 check boxes (if they are not already selected), and then click OK

Verify that the Date and Time Settings on Your Computer Are Correct

Because SSL certificates have an expiry date, if the date on your computer isn't correct, it may prevent you from connecting to secure sites. To verify that your computer is configured with the correct date and time settings:

1. Click Start
2. Click Control Panel
3. Click Date, Time, Language, and Regional Options, and then click Date and Time
4. Select the Date & Time tab
5. Check to make sure that the date and time settings are configured to use the current date and time, and then click OK