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Operating System & Browser

Operating System and Browser Compatibility

Below is a list of operating systems and browsers that have been approved to meet security and application requirements for Cathay Business Online Banking. Other OS and browsers may be used; however, they are not supported by the bank and some features may not function properly.


Operating System Apple Inc. Safari® Microsoft Internet Explorer® Microsoft Edge® Mozilla Firefox® Google Chrome™
Windows 7 64 bit - 11 - 68 or latest 75 or latest
Windows 8.1 64 bit - 11 - 68 or latest 75 or latest
Windows 10 32 bit - 11 44 or latest 68 or latest 75 or latest
Windows 10 64 bit - 11 44 or latest 68 or latest 75 or latest
MAC OS X 10.12
(Sierra™)
12 - - - -
MAC OS X 10.13
(High Sierra™)
12 - - - -


For maximum security, Cathay Bank recommends the use of the latest browser versions offered (including security patches).  Versions that are two releases or older than the current release are not supported.  Additionally, if a browser or operating system is no longer supported by the vendor, it is not supported by Cathay Bank.

Many vendors are pushing browser updates to the latest version using automatic downloads; you may not be aware the browser has been updated.  Once updated, many browsers cannot be set back to earlier versions if a problem occurs.

Beta versions of browsers and operating systems are not supported.



Cathay Bank

Email communication is not secure

Please do not include sensitive information such as account numbers or other personal information such as Social Security or Tax Identification numbers, driver’s license numbers, etc. in any email sent to us via this link.