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Trio8800 , Cannot sync calendar events with either Exchange Office 365. v5.0

Occasional Contributor

Trio8800 , Cannot sync calendar events with either Exchange Office 365. v5.0

Hi there,


We have today seen an issue where all our Trio 8800 cannot use AutoDiscover to sync with  Office 365 Calendar. As a workaround we confure the Exchange URL


EWS Information

Status: EWS deployed


Configured Exchange URL



Extract from Debug Log

1907012340|pgui |4|00|Re-syncing calendar events
1907012340|pgui |4|00|Re-syncing calendar events
1907012340|pgui |4|00|CSoapTransaction::onFinished() called for old reply
1907012340|pgui |4|00|onNetworkError: error occurred 301
1907012340|pgui |4|00|onNetworkError: retrying the subscription in 120000
1907012348|proxy|3|00|proxy's Ticked,Reason(Timer),Count/Size(1/1),Stop? (Yes)
1907012348|clist|4|00|dbCfg::getServerDir:Unknown dbCfg type
1907012348|clist|4|00|dbCfg::getServerDir:Unknown dbCfg type


The Trio 8800 is using ver


Any pointers appreciated!


Kind Regards


Message 1 of 2
Polycom Employee & Community Manager

Re: Trio8800 , Cannot sync calendar events with either Exchange Office 365. v5.0

Hello @Polyphasic ,


welcome to the Poly Community.

Please ensure you always check the FAQ's and/or utilize the community search before posting any new topics or follow up posts.


Jan 17, 2017 Question:How can I troubleshoot simple Skype for Business, LYNC or Office365 issues?

Resolution: Have a look => here <=


In addition, UC Software 5.8.0 is no longer supported. Please upgrade to UC Software 5.9.0 Rev AB or at least Rev AA

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

The title Polycom Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.


Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's
Message 2 of 2