To work around this, connect through the mobile carrier's data connection instead of Wi-Fi. If the Wi-Fi connection that's used requires authentication before connecting, Skype for Business may not connect because it can't use the credentials to connect through a proxy. However, it can't find the sign-in address that was entered by the user.Ĭonnecting over Wi-Fi through an authenticating proxy The Skype for Business for Android can discover the correct Skype for Business Online server.This error message indicates one of the following conditions: ![]() ![]() Please check your account information and try again. The user receives the following error message when the user tries to sign in:Ĭan't sign in. The Auto-Detect CNAME records are configured incorrectly or aren't configured at all.This error message usually indicates one of the following conditions: Also please check your network connection, sign-in address and server addresses. The user receives the following error message:Ĭannot connect to the server. If sign in continues to fail on a 3G data connection, although the CNAME DNS records are configured, it may be an issue with the cellular service provider's data connection. If the user has the option, have the user switch between Wi-Fi and 3G to determine whether the issue can be scoped to one kind of connection. Use the nslookup command and a public DNS server to determine whether the DNS CNAME record is configured correctly. To troubleshoot, use one or more of the following methods, as appropriate for your situation: For the Auto-Detect process to discover the correct Skype for Business Online service, a CNAME record that meets the following criteria must be created for the SIP domain that's being used: Alias The Skype for Business for Android looks for different DNS records than the Skype for Business desktop client. To access the User name, Domain, Internal discovery address, and External discovery addressfields, select Server Settings on the sign-in screen. The Sign-in address and Password fields are displayed on the sign-in screen. *These addresses are valid only for Microsoft 365 users and will be different for On-premises Skype for Business Server deployments. If automatic discovery for mobile clients hasn't been configured, users have to enter the following internal and external discovery addresses in addition to the fields that are listed in the table: Sign-in address: SIP address User name: UPN Password: Password Sign-in address: SIP address User Name: Blank Password: Password Sign-in address: SIP address **User name:**UPN or domain\username Password: Password **Sign-in address:**SIP address User name: Blank Password: Password The following table describes the sign-in fields required for Android users: User is hosted by Whether users are hosted on an on-premises Skype for Business (Lync server) or on Skype for Business Online.Whether a user's Session Initiation Protocol (SIP) address is the same as the user's user principal name (UPN).When users sign in to the Skype for Business for Android, the sign-in information that's required to successfully authenticate depends on the following scenarios: For more information, click the following article number to view the article in the Microsoft Knowledge Base: Sign-in requirements for Google Android lync.The current release for Android smartphones isn't supported on Android media tablets or on other non-phone Android form factors (hardware models). Test the outcome of the file replacement by loading Office to see if the error still appears as it did before. Placing the newly-downloaded lync.exe file in the right directory (where the original file resides) will most likely resolve the issue, but you should test to make sure. Additionally, Microsoft can also be a source of some rare files which we do not have in our directory. ![]() Unfortunately, some lync.exe file versions may not be currently listed in our database, but they can be requested (by clicking "Request" button). ![]() See the table below for a list of lync.exe files we have available for download for most Windows versions (also including %%os%%). Windows Executable File formats, classified as Executable Files, most often carry the EXE extension. Furthermore, keeping your registry clean and optimized can prevent invalid file path (like lync.exe) and file extension references, so we recommend running a registry scan cleanup regularly. Replacing your EXE file is generally a solution to fixing these issues. Typically, lync.exe errors are caused by a corrupt, infected, or missing executable file, and commonly happen at Office startup.
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