The device logs indicated that there is an error with certificate.Įxported the default certificate without private key and executed the certutil command as follows:Ĭertutil -f -urlfetch -verify C:temppool.crt After the download, these new media phones and other Microsoft certified devices showed same error. However, on new media phones and other Microsoft certified devices, the provisioning access download new Root CA chain to the devices. Polycom CX500, CX600 and CX3000 phones – also known as LPE, Polycom VVX series new Microsoft certified media phones and other Microsoft certified devices. These Microsoft certified phones include Lync Phone Edition – e.g.
This is a production environment and there are about 1500 Microsoft certified phones and devices. Phones will not sign-in to the Skype for Business Server 2015 environment with appropriate and correct credentials.
Basically, the old Root CA is getting replaced with new Root CA certificate chain.Īfter assigning the new Default Certificate to Skype for Business Server 2015 environment, all Microsoft certified phones and devices in the network disconnected from the Skype for Business Server 2015 pool and showed the message “ Connecting to Lync Server …”.
#Skype for business app is not a valid win32 application Offline#
In this specific case, there are two Certificate Authority (CA) in the environment – an old Root CA, a single CA server with SHA1 algorithm and a new Root CA with two tire PKI, an offline Root CA + Issuing CA with SHA256 algorithm. Run into this issue (Skype for Business phones showing “Connecting to Lync Server…”) with Microsoft certified phones and devices connected to Skype for Business Server 2015 environment after replacing the Default certificate of the pool.
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