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-->Summary: Skype for Business Server 2019 or Skype for Business Online administrators can use these tables to understand what features are supported on which clients.
Before you deploy or upgrade to Skype for Business Server, check which clients are already in use in your organization. Use the tables below to understand the feature support impact on those clients. This can help you communicate changes to users, pace the roll-out process, and fully understand the benefits of upgrading to the latest client.
Some features available with Skype for Business Server 2019 are not available in Skype for Business Online; see Online or Hybrid user account limitations for specifics. Skype for Business Online Admins may want to refer to Skype for Business Online Service Description for information on the different plans available to them.
The following tables show the features that are available with each client that works with Skype for Business Server 2019 or Skype for Business Online. You may also want to refer to Mobile client feature comparison for Skype for Business for smart phone and tablet client feature comparisons. The Client Access License or User Subscription License your organization purchases will also have an impact on which features are available to your users. Whether you deploy the Full or Basic client to users depends on the license or plan your organization chooses to buy. See the Licensing Guide for more details.
Important
Skype for Business Server 2019 and Skype for Business Online support the following previously released clients: Lync 2013, Skype for Business 2015, and Skype for Business 2016, as well as the Skype for Business 2019 client. For information about these clients when used with other servers, see the Client comparison tables for Lync Server 2013 and Desktop client feature comparison for Skype for Business 2015.
Note
The Skype for Business Web App browser client and Skype Meetings App Windows 10 app only provide Meetings support. Refer to Plan for Meetings clients (Web App and Meetings App) for more about these clients.
Enhanced Presence support
This table covers the Enhanced Presence features that extend beyond a simple indication of whether a user is online, offline, busy, etc.
| Feature/capability | Skype for Business 2015, 2016, or 2019 client | Skype for Business on Mac | Lync 2013 client |
|---|---|---|---|
| Publish status | ✔ | ✔ ❶ | ✔ |
| View status | ✔ | ✔ | ✔ |
| View status notes and Out of Office messages | ✔ | ✔ | ✔ |
| Add a custom location | ✔ | ✔ | ✔ |
| Add a custom note | ✔ | ✔ | ✔ |
| Use a photo from any public site for My Picture (not available in Skype for Business Online) | ✔ | ✔ |
❶ Does not support publishing status based on calendar free/busy information.
Contacts and Contact Groups support
This table covers the features relating to managing IM and Presence contacts.
| Feature/capability | Skype for Business 2015, 2016, or 2019 client | Skype for Business on Mac | Lync 2013 client |
|---|---|---|---|
| Pre-populated Contacts list | ✔ | ||
| View and Modify Contacts list | ✔ | ✔ | ✔ |
| Tag contacts for status change alerts | ✔ | ✔ | ✔ |
| Control privacy relationships | ✔ | ✔ | |
| Search the corporate address book | ✔ | ✔ | ✔ |
| Search Microsoft Outlook contacts | ✔ | ✔ | ✔ |
| Manage contact groups | ✔ | ✔ | ✔ |
| Expand distribution groups and Microsoft 365 Groups | ✔ | ✔ | ✔ |
| Search for Response Groups (not available in Skype for Business Online) | ✔ | ✔ | |
| Display recent contacts group | ✔ | ✔ | |
| Display current conversations group | ✔ | ✔ | ✔ |
| Display alternate contact views (for example, tile) | ✔ | ✔ | ✔ |
| Sort contacts by Group, Relationship, or New (people who've added you to their Contacts list) | ✔ | ✔ | |
| Sort contacts by Status (availability) | ✔ | ✔ | |
| Search and add Exchange contacts | ✔ | ✔ |
IM support
This table covers features related to IM support.
| Feature/capability | Skype for Business 2015, 2016, or 2019 client | Skype for Business on Mac | Lync 2013 client |
|---|---|---|---|
| Initiate IM with or email to a contact | ✔ | ✔ | ✔ |
| Navigate among multiple IM conversations/Track multiple conversations in a single tabbed window | ✔ | ✔ | ✔ |
| Log IM conversations in Outlook | ✔ | ✔ If server-side conversation history is turned on | ✔ |
| Check spelling | ✔ | ✔ | |
| Skill search (with SharePoint Server integration) (On-premises Skype for Business Server and on-premises SharePoint 2013 are required for skill search.) | ✔ | ✔ | |
| Persistent Chat (Group Chat) integration (not available for Skype for Business Online) | ✔ | ✔ | |
| Escalate a Persistent Chat room to a Skype for Business Meeting with one click (not available for Skype for Business Online) | ✔ | ✔ | |
| Inline pictures of sender and receiver in IM window | ✔ | ✔ | |
| Receive ink messages | ✔ | ✔ | |
| Set IM messages as high importance | ✔ | ✔ |
Meetings support
This table covers features related to Meetings support.
Note
Skype for Business meeting features aren't available in Skype for Business Online Standalone Plan 1. Plan 1 is being retired.
In Skype-to-Skype sessions, a Skype for Business Online Plan 1 user can participate in desktop sharing and application sharing if they're invited by a user who has access to sharing features.For details, see the Skype for Business Online Service Description.
| Feature/capability | Skype for Business 2016 client | Skype for Business on Mac | Skype for Business Web App | Skype for Business 2015 client | Lync 2013 client |
|---|---|---|---|---|---|
| Add computer audio | ✔ | ✔ | ✔(requires plug-in) | ✔ | ✔ |
| Add video | ✔ | ✔ | ✔(requires plug-in) | ✔ | ✔ |
| View multiparty video (gallery view) | ✔ | ✔ | ✔ | ✔ | ✔ |
| Video-based screen sharing | ✔ | ✔ | ✔ View-only | ||
| Use in-meeting presenter controls | ✔ | ✔ | ✔ | ✔ | ✔ |
| Access detailed meeting roster | ✔ | ✔ | ✔ | ✔ | ✔ |
| Participate in multiparty IM | ✔ | ✔ | ✔ | ✔ | ✔ |
| Share the desktop (if enabled) | ✔ | ✔ ❶ | ✔ ❶ (requires plug-in) | ✔ | ✔ |
| Share a program (if enabled) | ✔ | View only | ✔(requires plug-in) | ✔ | ✔ |
| Add anonymous participants (if enabled) | ✔ | ✔ | ✔ | ✔ | ✔ |
| Use dial-in audio meetings ❷ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Initiate a Meet Now meeting | ✔ | ✔ | ✔ | ✔ | |
| Add and present Microsoft PowerPoint files | ✔ | ❸ Annotations not available | ✔ | ✔ | ✔ |
| Navigate Microsoft PowerPoint files | ✔ | ✔ | ✔ | ✔ | ✔ |
| Add and edit OneNote meeting notes | ✔ | Edit only (not add) | ✔ | ✔ | |
| Use a whiteboard | ✔ | ✔ | ✔ | ✔ | |
| Conduct polls | ✔ | ✔ | ✔ | ✔ | |
| Upload files to share with others | ✔ | ✔ | ✔ | ✔ | ✔ |
| Schedule a meeting or conference | Outlook or Skype for Business Web Scheduler | Outlook or Skype for Business Web Scheduler | Skype for Business Web Scheduler | Outlook or Skype for Business Web Scheduler | Outlook or Lync Web Scheduler |
| Q&A Manager | ✔ | ||||
| Disable attendee video | ✔ | ✔ | |||
| Disable meeting IM | ✔ | ✔ | ✔ | ✔ | |
| Mute Audience | ✔ | ✔ | ✔ | ✔ | ✔ |
| Make everyone an attendee | ✔ | ✔ | ✔ | ✔ | |
| Produce Skype Meeting Broadcast | ✔ | ||||
| Delegate can schedule a meeting on behalf of delegator | ✔ | ✔ | ✔ | ||
| Synchronize delegates between Skype for Business and Outlook | ✔ | ✔ | ✔ | ||
| Set Video Spotlight (lock video) | ✔ | ✔ | ✔ | ✔ | |
| Give/Take control of screen sharing | ✔ | ✔ |
❶ Participants can't control desktops that are shared by Skype for Business on Mac, Lync for Mac 2011, or Communicator for Mac 2011 users. Skype for Business on Mac, Lync for Mac 2011 and Communicator for Mac 2011 users can't control desktops shared by Windows users. This also won't work for Skype for Business Web App on Max OSX.
❷ For Skype for Business Online, this feature requires Microsoft PSTN Conferencing, Exchange Unified Messaging, or a third-party audio conferencing provider.
❸ The Lync for Mac 2011 client cannot view Microsoft Office 2013 PowerPoint presentations when they have been shared in a conference by the Skype for Business Web App.
❹ For Skype for Business 2016 apps, you must be using Click-to-Run, build 16.0.4227 or later.
➀ For Skype for Business 2015 apps, you must have the September Update, build 15.0.4747 or later.
Voice (Telephony) support
This table covers features related to voice services support.
Note
Skype for Business Voice (Telephony) features are limited to certain Skype for Business Online subscription plans. For details, see the Skype for Business Online Service Description.
| Feature/capability | Skype for Business 2015, 2016, or 2019 client | Skype for Business on Mac | Lync 2013 client |
|---|---|---|---|
| Initiate a call | ✔ | ✔ | ✔ |
| Click to call a contact | ✔ | ✔ | ✔ |
| Transfer a call | ✔ | ✔ | ✔ |
| Manage call forwarding | ✔ | ✔ | ✔ ❶ |
| Manage team call settings | ✔ | ✔ ❶ | |
| Manage delegates | ✔ | ✔ | ✔ ❶ |
| Initiate a call to a Response Group | ✔ | ✔ ❶ | |
| Support emergency services (E-911) | ✔ | ✔ | ✔ ❶ |
| IM notification to SIP URI(s) for E-911 call | ✔ | ✔ | ✔ |
| IM notification to distribution list for E-911 call | ✔ | ✔ | ✔ |
| Connect to voice mail, set up or change greeting | ✔ | ✔ | ✔ ❶ |
| Missed call notification | ✔ | ✔ | ✔ ❶ |
| Make calls on behalf of another contact (manager/delegate scenario) | ✔ | ✔ | ✔ ❶ |
| Handle another's calls if configured as a delegate | ✔ | ✔ | ✔ ❶ |
| Call park | ✔ | ✔ ❶ | |
| Group call pickup | ✔ | ✔ ❶ | |
| Location-based routing | ✔ | ✔ | ✔ |
| Manage Response Group/Team call group | ✔ | ✔ |
❶ This feature isn't available in Skype for Business Online.
Skype For Business 2016 For Mac Download
External users support
This table covers features related to support for external users homed on the PSTN.
| Feature/capability | Skype for Business 2015, 2016, or 2019 client | Skype for Business on Mac | Lync 2013 client |
|---|---|---|---|
| Initiate IM with a public contact | ✔ | ✔ | ✔ |
| Initiate IM with a federated contact | ✔ | ✔ | ✔ |
| Conduct two-party or multiparty calls with external users (not available in Skype for Business Online) | ✔ | ✔ | ✔ |
Recording support
This table covers features related to support for recording meetings.
| Feature/capability | Skype for Business 2015, 2016, or 2019 client | Skype for Business on Mac | Lync 2013 client |
|---|---|---|---|
| Client-side recording of audio, video, application sharing, desktop sharing, and uploaded content | ✔ ❶ | ✔ ❶ | |
| Client-side recording of file transfers, shared OneNote pages, and PowerPoint annotations | ✔ ❷ | ✔ ❷ | |
| Select preferred recording resolution | ✔ | ✔ |
❶ Recording is unavailable in certain Skype for Business Online standalone plans. Recording requires full Skype for Business client rights.
❷ Recording of file transfers, shared OneNote pages, and PowerPoint annotations is unavailable in Skype for Business Online.
Modern Authentication
This table covers features requiring support for modern authentication.
Modern authentication also requires a topology described in Skype for Business topologies supported with Modern Authentication.
| Feature/capability | Skype for Business 2015, 2016, or 2019 client | Skype for Business on Mac | Lync 2013 client |
|---|---|---|---|
| Modern Authentication | ✔ | ✔ | ✔ |
| Multi-factor Authentication | ✔ | ✔ | ✔ |
| Cert -Based Authentication | ✔(Domain-joined device only) | ✔ | ✔(Domain-joined device only) |
| Kerberos Authentication | ✔ | ✔ |
Archiving, compliance, and logging support
This table covers features related to support for archiving and logging functions.
| Feature/capability | Skype for Business 2015, 2016, or 2019 client | Skype for Business on Mac | Lync 2013 client |
|---|---|---|---|
| Archiving of IM conversations in Outlook Conversation History | ✔ ❶ | ✔ If server-side conversation history is turned on | ✔ ❶ |
| Client-side archiving of audio, video, application sharing, desktop sharing, and uploaded content | ✔ ❶ | ✔ ❶ | |
| Client-side archiving of file transfers, shared OneNote pages, and PowerPoint annotations (unavailable in Skype for Business Online) | ✔ | ✔ | |
| Access sign-in logs from Skype for Business icon in the task bar | ✔ | ✔ |
❶ For Skype for Business Online users, this feature requires Exchange Online and is controlled by the user's Exchange mailbox In-Place Hold attribute.
Client limitations
Basic client limitations
The features below are available using the Full client and are not available with the Basic client:
Manage team call settings
Manage delegates
Make calls on behalf of another contact (manager/delegate scenario)
Handle another's calls if configured as a delegate
Manage a high volume of calls
Initiate a call to a Response Group
Call park
Change greeting
Group call pickup
Online or Hybrid user account limitations
User accounts can exist either Online or On-premises, and that will affect the features available to that user. Users with accounts on Skype for Business Online will not have access to the following features, even with the Full client:
Enhanced Presence: Use a photo from any public site for My Picture
Contacts: Search for Response Groups
IM Support: Persistent Chat (Group Chat) integration
IM Support: Escalate a Persistent Chat room to a Skype for Business Meeting with one click
External Users: Conduct two-party or multiparty calls with external users
See also
-->Introduction
This article describes how to troubleshoot the following Skype for Business Online (formerly Lync Online) issues:
- Contacts seem to be offline in Skype for Business, or they have a status of 'presence unknown.'
- You can't search the address book in Skype for Business.
- Skype for Business Online contacts are lost or missing, or the contacts list isn't updated.
Procedure
Scenario 1: Contacts seem to be offline in Skype for Business
Contacts appear to be offline for several reasons. Verify the following conditions before you do additional troubleshooting:
The contact seems to be offline and hasn't been blocked by the user in the user's Contacts list. To do this, follow these steps:
- In the main Skype for Business window, click Relationships.
- Expand the Blocked Contacts group, and then verify that the offline contact isn't blocked.
Note
If a contact blocks you, that contact is displayed as offline in your contacts list.
The contact is assigned a Skype for Business Online license.
If the contact is a member of another Skype for Business organization or an external Skype contact, verify the following:
External connectivity is enabled in the Skype for Business Online Admin center.
In the Skype for Business Online Admin center, the contact's domain is an allowed domain and the domain isn't explicitly blocked.
Note
After you add a new Skype or Skype for Business contact from another organization, if the contact ignores the request to add you to their contacts list, that contact will be displayed as offline in your contacts list.
For additional help with external contacts, see the following Microsoft websites:
- 2392146 Skype for Business Online users can't communicate with external contacts
Scenario 2: You can't search the global address list by using Microsoft Skype for Business
When you try to search the address book, you receive one of the following error messages:
- Cannot synchronize with the corporate address book. This may be because the proxy server setting in your web browser does not allow access to the address book. If the problem persists, contact your system administrator.
- The address book is preparing to synchronize. Search results might not be current.
In Skype for Business Online, address book and GAL lookups are performed through web requests only. The Skype for Business client doesn't download and save a local copy of the address book. This reduces the load on the servers, and it provides the most up-to-date information possible when you run a contact search.
Verify that connectivity to the Address Book web service is available. To do this, follow these steps:
In the notification area on the right side of the taskbar, locate the Skype for Business icon, hold down the Ctrl key, right-click the Skype for Business icon, and then click Configuration Information.
Copy the ABS External Server URL.
Start Internet Explorer, and then paste the URL into the address bar.
The message that you receive from Internet Explorer indicates whether the URL can be accessed from the computer. If you can't access the URL, this indicates there's something blocking communication to or from the URL, such as a firewall or proxy:
If the URL can be accessed, you'll see one of these error messages (even though a page isn't displayed):
- 401 Unauthorized: Access Denied
- Internet Explorer cannot display the webpage.
If the URL is inaccessible, you'll see one of these error messages:
- The webpage cannot be found.
- 404 Not Found
Verify that the Exchange Autodiscover service is set up correctly. To do this, see Method 2 in the 'Solution' section in the following Microsoft Knowledge Base article:
2404385 Outlook can't set up a new profile by using Exchange Autodiscover for an Exchange Online mailbox in Office 365
Scenario 3:Skype for Business Online contacts are lost or missing, or the contacts list isn't updated
In rare cases, the contacts list may be corrupted because of an invalid character in an 'out of office' message or because of a lingering deprovisioned contact. To resolve this problem, force a contacts list update to make sure that your information is synchronized. To this, follow these steps:
Skype 2016 Versions
Locate the following folder:
- For Skype for Business 2016
Windows 7, Windows 8, and Windows 10:
%localappdata%MicrosoftOffice16.0Lyncsip_<sign-in name>
- For Skype for Business 2015 (Lync 2013)
Windows 7, Windows 8, and Windows 10:
%localappdata%MicrosoftOffice15.0Lyncsip_<sign-in name>
- For Skype for Business 2016
Delete the following files:
- Galcontacts.db
- galcontacts.db.idx
- CoreContact.cache
- ABS_<sign-in name>.cache
- Mfugroup.cache
- PersonalLISDB.cache
- PresencePhoto.cache
Restart Skype for Business, and then wait for 30 minutes for resynchronization to finish.
Skype For Business 2016 App
Still need help? Go to Microsoft Community.