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Online Banking and Mobile Banking Technical Requirements

System Requirements

The computer you use must meet the following minimum requirements:

  • Standard PC or Mac® with at least 1-GHz processor and 1 GB of RAM.
  • Available browser updates applied for improved security that provide anti-virus and spyware protection.
  • Microsoft® Windows® Vista Service Pack (SP) 2 or 3, Windows® 7 / 8 / 10
    • Note: Microsoft stopped supporting Windows® XP and XP-compatible Internet Explorer (IE) in April 2014, including security updates. XP users who do not upgrade their operating systems should replace IE with Google ChromeTM for an up-to-date, secure Internet browser. If you are currently using Windows XP, TDECU highly recommends you upgrade your operating system due to security vulnerabilities that could impact your financial information and other valuable information.
  • Cable, Digital Subscriber Line (DSL), or Integrated Services for Digital Network (ISDN) Internet connection. (Dial-up connections are not supported.)
    • Note: Satellite connections often have difficulty supporting encrypted, Hypertext Transfer Protocol Secure (HTTPS) applications. Since Online and Mobile Banking are HTTPS-encrypted for the safety of your financial information, some satellite cable connections may exhibit slow responses.

Display Requirements

Desktop and laptop displays can be any height but must support at least a 1300-pixel width. Otherwise, you may need to scroll horizontally to see the entire Online Banking interface.

Browser Requirements

For the most secure experience using Online Banking, we recommend that you use the latest version of the supported browsers listed on this page, keep your browser security settings up to date and enable JavaScript. Internet browser support is subject to change with little to no notice and we encourage you to configure your browsers for automatic updates.

In some circumstances, we may need to block certain browsers and software from accessing Online Banking and Mobile Banking due to possible security risks and may not be able to inform you in advance. If you attempt to log in with an unsupported browser, you will be redirected to a website to download a new version of the browser.

    • Note: For the most secure and consistent experience on mobile devices and tablets, use our mobile app instead of your mobile browser. See the Mobile Application Requirements section for more information.

We do not test third-party software (such as browser extensions, plug-ins, non-credit union provided mobile applications, or non-TDECU supported Personal Financial Management (PFM) applications) to determine compatibility with Online Banking or Mobile Banking.

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Some minimally supported browsers, listed below may show minor behavioral or cosmetic differences in Online Banking, but generally, support the Online Banking features and functionality

PC Browser Compatibility

Browser Windows® Vista
SP 2 and 3
Windows® 7
Windows® 8.1
Windows® 10  
Google ChromeTM 37 or later Supported Supported Supported Free Download
Microsoft® Internet Explorer 11.x N/A Supported Supported Free Download
Microsoft® Edge N/A N/A Supported Free Download
Mozilla® Firefox® 33 and later Supported Supported Supported Free Download

Note the following details about the PC Browser Compatibility table:

  • Microsoft® Windows® 7 SP 1 is required for Internet Explorer 11 support.
  • Microsoft® Windows® 8.1 is required for Internet Explorer 11.
  • Online Banking is not compatible with Safari® on Microsoft® Windows®, as Apple discontinued development of security patches for Microsoft®Windows®. Online Banking is compatible with Safari® on Mac®OS X 10.8, as shown in the next table.

Mac® Browser Compatibility

Browser Mac® OS X® 10.6 - 10.11  
Google ChromeTM 37 or later Supported Free Download
Safari® 6 - 8 Minimally Supported Free Download
Safari® 9 Supported Free Download
Mozilla®Firefox®33 and later Supported Free Download

If you need technical assistance downloading your browser, contact your Internet Service Provider (ISP) for assistance.

Mobile Application Requirements

This section describes the operating systems, connection types, and camera resolutions that are compatible with the Mobile Banking Applications that members can download from the Apple Store (for iOS devices) or Google Play (for AndroidTM devices.

Note the following details about our Mobile Applications:

  • A valid email address and telephone number are required.
  • Mobile Applications function best when GPS or a native mapping app (also called Location Services) is enabled.
  • We do not recommend the use of mobile browsers for our mobile experience. Use our mobile application instead.

When requesting support for Mobile Applications, please identify the model and operating system of the device and, if applicable, confirm that the camera is rear-facing.

AndroidTM Compatibility

Android®4.2.0 and up Supported

Apple iOS Compatibility*

iOS 7.x Minimally Supported
iOS 8.x Supported
iOS 9.x Supported

* Mobile Applications are compatible with Apple iPhone 4 and newer models.

The following mobile operating systems are not supported with our Mobile Applications:

  • Windows Phone®
  • Blackberry®
  • Kindle Fire®

Mobile Connectivity*

3G Minimally Supported
4G LTE Supported
Wi-Fi Supported

*Note: Devices that do not have Location Services or native mapping applications do not support Member Center/ATM locator functionality.

A mobile device with a rear-facing camera is required to deposit checks with the mobile deposit capture (mRDC) functionality in our Mobile Applications. The following table provides camera resolution compatibility for our Mobile Banking Applications.

mRDC camera Compatibility

Camera Resolution  
1.9 - 4.9 megapixels Minimally Supported
5 megapixels or higher Supported

Third-Party account management software

Note the following details about third-party account management software compatibility with Online Banking:

  • Intuit® Quicken®and QuickBooks®: Supported versions of Quicken and Quickbooks are supported by TDECU. Refer to the Quicken Discontinuation Policy for details about discontinued Quicken services and application versions. For additional assistance with your Quicken software, please contact Quicken Support.

WARNING: TDECU is not liable for any direct or indirect technical or system issues or consequences arising from your access to, or use of, third-party technologies or programs linked to from TDECU’s website or our Online and Mobile Banking Applications.