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Important Stamps.com Operating System Security Requirements

May 8th, 2023

Important information about connecting to Stamps.com!

The Payment Card Industry (PCI) Security Standards Council, a coalition of credit card payment processors such AmEx, Visa and Mastercard, has updated their protocols for transmitting secure credit card transactions. As of June 30, companies will no longer be able to transmit credit card data using the older Transport Layer Security protocol TLS 1.0. In order to remain PCI compliant, only TLS 1.1 and TLS 1.2 will be allowed starting July 1, 2018.

Required Security Update. PCI Compliance to TLS 1.1 & TLS 1.2

Older Operating Systems Can No Longer Login to Stamps.com
Due to this TLS requirement, older operating systems and browsers will not be able to connect to Stamps.com after June 30, 2018. The following operating systems and browsers DO NOT have native support for TLS 1.1/1.2:
• Microsoft Windows Vista
• Microsoft Windows XP
• Microsoft Windows 2003
• MacOS 10.8 and below
• Internet Explorer versions 10 and below
• Mozilla Firefox versions 26 and below
• Google Chrome versions 29 and below
• Apple Safari versions 6 and below

In order to login to Stamps.com, please update to a supported operating system and internet browser on or before June 30, 2018.

Windows 7 User Verification:  Some Windows 7 users may not have modern versions of TLS enabled by default. Stamps.com Software utlilizes specific Internet Explorer settings to make a connection to our server.  If you are using Windows 7, you will need to check/update your TLS settings within Internet Explorer. To check or update your TLS settings, open the Internet Explorer browser, then click on the “Settings” gear icon and select “Internet Properties”. In the new window, select the Advanced tab, and make sure the boxes next to “Use TLS 1.1” and “Use TLS 1.2” are checked.Learn more info on how to check your TLS settings for Windows 7.

View of TLS 1.1 and TLS 1.2 settings inside the "Internet Properties" section of Internet Explorer (IE)

View of TLS 1.1 and TLS 1.2 settings inside the “Internet Properties” section of Internet Explorer (IE)

Stamps.com Online Customers
: All of your account information will be available after updating your operating system and browser. Stamps.com Online updates itself automatically, and is accessible from any modern internet browser.

Stamps.com Software Customers: When you update your operating system and reinstall Stamps.com PC Software, most of your information will move to your account except for your address book. Before you update to a new Operating System, you MUST export your existing address book, keep the file handy, and then import it after you update.

What do I do if I cannot update Operating Systems?
If you are unable to update to a supported operating system, the latest version of the Stamps.com Software includes enhancements that may help you avoid a service interruption. To download the latest version, go to www.stamps.com/download.

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