Jun 26, 2018 - Imitate IE on Your Mac with Safari Developer Mode. It means that a certain user is using the 11th version of Safari on macOS High Sierra.

Whether you develop for the web and need to see how your site or web app displays itself in multiple browsers, or you just want to visit a site that requires a particular browser that you don't want to use, you may eventually need to use a browser other than Safari. While most of the web is free to access through any browser you'd like, there are occasionally websites (particularly older ones) that need you to use browsers like Internet Explorer, or worse yet, would like you to be on a Windows PC. Or maybe you'd like to see how your site or web app presents itself in Safari on iPhone or iPad, or Chrome on Windows.

Luckily, Safari on Mac has the answer for you. Safari allows you to masquerade as the user of other browsers and Windows through a tool in its Develop menu: changing the user agent. Changing the user agent tells websites that you're using a browser other than the version of Safari that you're using on your Mac. It can event tell a website that you're running Windows.

Safari for Mac supports the following user agents:

• Safari for iPhone
• Safari for iPad
• Safari for iPod touch
• Microsoft Edge
• Internet Explorer 11
• Internet Explorer 10
• Internet Explorer 9
• Internet Explorer 8
• Internet Explorer 7
• Google Chrome for Mac
• Google Chrome for Windows
• Firefox for Mac
• Firefox for Windows

Keep in mind that, though Safari will appear to be another browser, it won't actually be that browser. Any web app or site that requires, say, Chrome's Blink rendering engine (which Safari doesn't have) won't work properly, even if Safari's user agent is changed to Google Chrome.

Here's how you go about changing the user agent in Safari.

How to access websites in Safari that require a PC or another browser

1. Open Safari from your Dock or Applications folder.
2. Click Safari in the Menu bar.
3. Click Preferences.
4. Click Advanced.
5. Check the box next to Show Develop menu in the menu bar.
6. Close the Preferences window. The user agent choices will be grayed out and unselectable if you don't.
7. Click Develop.
8. Hover over User Agent.
9. Click on the user agent of the browser you need. If you need to pretend that you're using a PC, choose Microsoft Edge, a version of Internet Explorer, Google Chrome — Windows, or Firefox — Windows.

Doing this should get you through a website detection-checker.

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Questions?

If you have any questions about masquerading Safari as a Windows web browser, let us know in the comments.

Updated May 2019: Updated through macOS Mojave.

Serenity Caldwell contributed to a previous version of this article.

macOS Catalina

Main

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Sierra [10.12.x]

Released on 20 September 2016

NOTICE

Verify in Table 1 the specific CAC enabler version you need to install to use your CAC with Mac OS Sierra.

The following information is provided for your situational awareness while setting up the utilization of your CAC on your Mac. It is updated as additional information is available and your input is appreciated for solutions not outlined here. Installation instructions can be found here.

NOTICE: The links to vendors / products is an attempt to save you time searching for the specific item, by linking you directly to the item shown. You will notice I have multiple [when I can find] vendors to choose from. I have no personal preference as to who you decide to purchase from. I am not endorsing any particular product, I'm merely letting you know what works and where you can get it from.

Windows on your Mac: We know you have made a conscious decision to “be a Mac,” but the Government / Microsoft have not. DTS and signing forms used to only be available to Windows users, but are now available on Macs. The last item you cannot do on a Mac is digitally encrypt and / or decrypt emails in OWA. To do this, you'll need to use Windows through a Virtual Machine, such as Parallels (discounted prices), VMware Fusion (Parallels vs. VMware comparison), or VirtualBox or through Apple’s native Boot Camp (alternate guide). This will require you to have a licensed copy of Microsoft Windows, install the DoD certificates, and make sure your Internet Explorer web browser is configured correctly. With these programs, you can install the S/MIME control software within your web browser. The benefit of the Virtual Machines over Boot Camp is that it will allow you to run Windows as an additional program (without restarting your computer) and keep OS X running the entire time.

Discounted prices on the programs mentioned below can be viewed here

NOTE: If your CAC reader is not being recognized by your virtual Windows, follow this guidance:
VMware Fusion: From the menu bar, select Virtual Machine, then USB. Find your CAC reader and select it.
Parallels Desktop- (In Coherent mode): Click the red parallel lines in the menu bar, Select Devices, USB, find your CAC reader and select it.
Parallels Desktop - (Not in Coherent mode): Simply plug your reader into the computer and select whether you want to use it in Mac or Windows. You may also need to click the word Devices in the top row, USB, then your CAC reader.

VirtualBox: Click the word Devices (at the top of the screen), then USB Devices, and select your CAC reader. When you want to use it on your Mac, go to the same location and remove the checkmark. If you receive an error message when trying to select the reader here follow these instructions:

* In the VirtualBox GUI, click on USB (small icon in the list of devices).
* Then check 'Enable USB Controller' and 'Enable USB EHCI controlling.'
* Lowest on the beach, you'll see a list of icons to your right. Check first. A box appears 'a new filter'. Check it.
* By clicking on the icon below, representative of a USB plug with a +, you'll see a list of drivers.
* Select the one that corresponds to your USB drive. Check it added in the filter window.