Yosemite Error – Sign in to Microsoft Lync Failed

Problem Summary

If  you’ve recently upgraded to Apple Mac OS X 10.10 Yosemite, and you attempt to use Microsoft Lync Mac 2001, you may likely get an error stating:

Sign in to Microsoft Lync failed because the service is not available or you may not be connected to the Internet.

This error message is misleading because the cause of it is likely neither of the problems suggested. Instead, it’s very likely due to having an additional language listed in your System Preferences.

Error Message Window

The error message window is like the one shown below.


Problem Solution

Follow these instructions to fix the problem.

  1. Go to System Preferences – Available from the Apple menu.
  2. Click on Language & Region – It is the flag icon in the top row of icons.
  3. Make sure English is the primary language. If another language is listed, remove it. You need not close Language & Region settings for these modifications to take effect.
  4. Try running Lync again. This time it should work.
  5. You can now add the language(s) back in that you removed in step #3 above. Again, it’s not necessary at this point to close Language & Region settings. Try running Lync again. It should still work.
  6. If you have another language selected as primary, such as Spanish, Lync won’t work. It will fail again as shown below.


Other Causes of Error

You may still get the connection error even after using the work-around fix described above. This can happen if your computer has gone into sleep mode, and then you wake it up. Just click the Sign In button again and it should connect.

User Experience Feedback

From Greg Johnson (17 Dec. 2014):

I was unable to start Lync. Here’s what I did:

  1. I checked my default preferred language in settings at it was already set to English.
  2. In an effort to clear out any previous settings, I added French and set it to the default.
  3. I tried starting Lync, but it still wouldn’t load.
  4. Then I removed French and returned to English as the default.
  5. Lync works fine now.

Yosemite Volume Control Feedback

In previous versions of OS X, the volume control would make a clicking sound when adjusted. As of Yosemite, the default setting is to have no audible feedback when adjusting the volume. This is a welcome change since often while wearing headphones, with volume at max, a person would go to adjust the volume and practically damage their hearing from the loud clicking noise.

If you miss the audible clicking sound during volume adjustment, you can get it back. It’s in System Preferences under Sound as shown below. Just put a check mark next to “Play feedback when volume is changed” to get audible feedback. Click the image below for a larger view.


Apple Yosemite Finder Window Controls Missing

When starting a program, such as TextEdit for example, a Finder dialog box opens up. Normally dialog boxes have the familiar red, yellow, and green buttons in the top left that let a person maximize, minimize, or close a window. With Yosemite, these controls are missing as can be seen in the window heading below. Click the image to enlarge.


Apple Yosemite Mail Features Topic Not Found

If you’re using Apple Mail after upgrading to Yosemite, the initial setup will require an upgrade of your old email mailboxes. The Mail Upgrade box is shown below.


If you click on the Read more… link to learn about new features in mail, it’s possible you’ll get a message stating, “The selected topic is currently unavailable. The topic you were trying to view could not be found.” This is shown below.


Close this message, and after waiting a little while, try clicking the Read more… link again.

You’ll notice that the Mail Help window does not have the same padding (space) above the window control buttons (red, yellow, green dots). Notice that the top corners are squared off rather than rounded. See below for a visual of this. This is likely an oversight by the programmers.


Java 8 Update 25 for Apple Max OSX 10.10 Yosemite


If you If you update to Apple Max OSX 10.10 Yosemite, and you’re using Google Chrome, SPSS, Creative Suite CS4 applications, or other Java dependent software, you may get a message similar to the one below stating that you need to install Java Runtime Environment.


You can read this entire page to familiarize yourself with the options available to you and what their impact is. Or, you can begin at the top with the latest information and solutions.

Update 30 August 2017

After three years working with various scenarios, a pattern of success is emerging. Today, on a computer running OS X 10.11 El Capitan, the above error message was appearing when trying to run SPSS. After installing Java SE 6 Runtime, SPSS ran without a problem. So, that simple installation seemed to resolve the problem and may work to resolve the issue for other software and other versions of OS X. You can get the Java SE 6 Runtime installation file here.

Update: 23 April 2015 – Java for OS X 2014-001

For months, if you tried to run the Deltawalker file comparison software, a message like the one above would appear and it would fail to run. However, as of 23 April 2015, if you go to the Java for OS X 2014-001 page on Apple’s website, and click on the Download button, then install that Java update, it fixes the problem and then Deltawalker will run. Let’s hope this resolves other issues.

Update: 20 March 2015 – Java Version 8 Update 40

As of 20 March 2015, if you click More Info on the button shown above, you’ll be taken to a page on the Java website to install the latest Java update which is Version 8 Update 40. Follow the instructions to download and install the Java update. If you’d like to download the file directly, click here. This update should resolve the problem described on this page below.

Revised 16 January 2015

This page was initially posted on October 18, 2014. After a few months, Apple and Sun/Java finally worked out the problems with these updates (described further down the page).

Here are the steps required to install the Java update that will eliminate the notification shown above.

  1. Click on the More Info button in the notification that appears on your screen (example below).
  2. On the resulting page (shown below) click the Agree and start Free Download button.
  3. Open the downloaded file if it doesn’t open automatically. You’ll see a window like the one below. Double-click on the icon as indicated to install Java 8 Update 25.pkg
  4. In the installation window, click the Continue button (as shown below).
  5. You’ll be asked for your computer user account username and password as shown below.
  6. You’ll probably be asked for the drive to install on, then the Installation Type window will appear as shown below. Click the Install button.
  7. The installation will begin and a progress window will appear as shown below.
  8. When the installation is completed, a window will appear as shown below.
  9. Your browser window should open to a page like the one below.
  10. When you click the Verify Java version button, you should see a confirmation message as shown below.

If There Are Problems

There had previously been problems with the installation of this Java update. If you have problems, the information found below may be helpful.

Java 6 from Apple

Apple has provided a version of Java 6 that installs properly on Yosemite. You can download and install that version. Click here to visit the download page on Apple’s website. It’c conceivable that some programs or websites might be looking for elements of Java 6 to confirm that Java is present. Even if you have newer versions of Java (such as 7 or 8) you may still get a message indicating you need Java if you don’t have 6 installed.

Safari Quick Fix

Follow these instructions for a quick fix to this issue:

  1. Begin with all programs closed. You may want to just restart your computer to ensure you begin fresh.
  2. Using the Yosemite Safari browser, visit the Java verify page here:
  3. This should cause Safari to invoke a launch of the Java update.
  4. Then, perhaps before you can press the Install Update button, another window will open to confirm the installation of the Java update. This is the dialog box to confirm the Java Detection you requested in step #2 above.
  5. Click Run. Then click Install Update in the other window. You may be prompted for your username and password.
  6. You will then see the series of dialog boxes shown below. Click the appropriate buttons to continue and then restart any programs that use Java.




This process will update Java for all Yosemite programs that are able to use the updated Java.

Google Chrome Shortcut

Apparently Google Chrome doesn’t work with Java 7 Update 71. The message below explains this, and it’s the page that shows up when you’re in Chrome and try to update Java. Click the image to enlarge.


You can install the untested 64-bit version of Google Chrome Version 39, then go directly to the correct download page and download Java 8 (jre-8u25-macosx-x64.dmg) or keep reading to learn more about the cumbersome process most people go through to get to the correct download page. However, if you install Java 8, the necessary Java 7 might not install because the installation will identify a newer version of Java.

The window below will likely show up if you try to download Java for Mac OS X. Click the image to enlarge.


If you click the “More Info…” button, you’ll be taken to a download page like the one shown below. Click the image below for a larger view.


When you click the download button, it will take you to a web page like the one shown below with the message, “You are running Mac OS X 10.10, which is currently an unsupported platform for Java 7. Starting with Java 8 Update 20 (8u20), download and install Java 8 from oracle.com. ” Click the image below for a larger view.


If you click the More information link, it takes you to the How do I install Java on Mac OS X 10.10 page. However, this isn’t the page you want, instead you should click on the Java 8 from oracle.com link. You’ll be taken to the Java SE Downloads page shown below that may not be easy to follow for most users. Click the image below for a larger view.


You’ll want to click the JRE Download button. This will take you to the Java SE Runtime Environment 8 Downloads page shown below. Click the image below for a larger view.


Click the white circle on the left of Accept License Agreement. From the list of available downloads, choose the one described as:

Mac OS X x64 …….. 56.76 MB …….  jre-8u25-macosx-x64.dmg

Double-click on the downloaded file and follow the on-screen instructions to install Java.

Compatibility Warning

Once you download Java 8 Update 25, you won’t be able to install Java 7 Update 71 (see message below). So, you may want to directly install Java 7 instead of Java 8, since some programs may look for 7 and not recognize 8 yet.


Global Impact

The maps below show recent visitors to this page who have been impacted by this issue. These are just our own page visitors, so you can imagine the thousands of people impacted by this issue.


Creating a Bootable Installation USB of Apple Mac OS 10.10 Yosemite


Follow these instructions to create a bootable USB installer for Apple Mac OS 10.10 Yosemite.

Prepare the USB Flash Drive

Insert a blank USB flash drive of 8GB or larger, but not unnecessarily too large since it would be wasted space. Run the Disk Utility program found under Applications in the Utilities folder. Then follow these steps.

  1. In Disk Utility, select the USB flash drive.
  2. Click on Partition.
  3. Choose Partition Layout of 1 Partition.
  4. For the Format choose Mac OS Extended (Journaled)
  5. For the Name, type YosemiteUSB.
  6. Click the Options button and choose GUID and click the OK button.
  7. Click the Apply button to make these changes to the USB flash drive.
  8. When asked if you are sure, click the Partition button.
  9. Exit the Disk Utility program.

Download Yosemite

In the following steps, you’ll download the Yosemite files from the App store, but stop before clicking Continue when the installer starts.

  1. Go to the Yosemite page in the App store on your computer.
  2. Click Download.
  3. It will take a while for the download to complete. If you want to view a progress meter, during the download, click on the Updates tab in the App store.
  4. Once the download is complete, an Installer will run and there will be a Continue button. Don’t click that just yet. Instead, continue to the steps below. Then, once the installer is on a USB, you can store the USB somewhere safe and continue with the guided installation from the App Store installer.

Copy Yosemite to USB

In the following steps, Yosemite will be copied to the USB flash drive and it will be made into a bootable drive.

  1. Run the Terminal program found under Utilities.
  2. Select, Copy and then paste the following command into your Terminal window. Although the text wraps here, it will be copied and then pasted as a single command.
    sudo ‘/Applications/Install OS X Yosemite.app/Contents/Resources/createinstallmedia’ –volume ‘/Volumes/YosemiteUSB’ –applicationpath ‘/Applications/Install OS X Yosemite.app’ –nointeraction
  3. Press Enter/Return after pasting in that command.
  4. You’ll be asked for your password. Enter it to continue. The process of copying the files may take 10 to 15 minutes depending on how fast or slow your computer is.
  5. The process will complete and you should see something like this in your Terminal window.

ComputerName:~ UserName$ sudo ‘/Applications/Install OS X Yosemite.app/Contents/Resources/createinstallmedia’ –volume ‘/Volumes/YosemiteUSB’ –applicationpath ‘/Applications/Install OS X Yosemite.app’ –nointeraction
Erasing Disk: 0%… 10%… 20%… 30%…100%…
Copying installer files to disk…
Copy complete.
Making disk bootable…
Copying boot files…
Copy complete.
ComputerName:~ UserName$

If everything went okay, then type Exit and press Enter/Return to end your Terminal session. Then quit the Terminal program.

You now have a USB bootable installer for Yosemite. To use this, when starting an Apple computer hold down the Option key and then choose the drive. For now, you can eject it and keep it safe for whenever you need it.

Continue Yosemite Installation

If you’d like to continue the installation of Yosemite that was automatically launched after download from the App Store you can do that now by clicking Continue. Or, you can quit that installer and return later (it’s in your Applications). Once installed, the Yosemite installation files will be automatically deleted. This is why it’s important to create the USB bootable installation drive before you continue with the installation from the App Store.


There were a variety of sources used to create the above non-visual instructions. The most helpful article was on iClarified, and it includes images for those who find that useful.