DPM 2012R2 - An unexpected error occurred while the job was running. (ID 104 Details: Internal error code: 0x809909FF)

If you see this error, try to allign all DPM agents versions in your HyperV cluster and reboot each node.

Azure MFA - the architectural options

https://dirteam.com/sander/2017/02/07/supported-azure-mfa-server-deployment-scenarios-and-their-pros-and-cons/ 

Audiocodes Mediant SBA Lyss error

Bumped into an error:

Log Name:      Lync Server

Source:        LS Storage Service

Date:          5/16/2017 5:54:02 PM

Event ID:      32071

Task Category: (4006)

Level:         Error

Keywords:      Classic

User:          N/A

Computer:     xxx

Description:

Storage Service had a failure while refreshing its calculation of DB space used.

DB Space Used Refresh Error. Object reference not set to an instance of an object.

Cause: The Timer task to refresh the DB space used value ran into an exception. This action will be retried and should auto recover.

Resolution:

Check event details. If problem persists, notify your organization's support team with the event details.

For the moment, not clear what causing it.

Option I consider for the moment are:

install latest Lync CU

install windows patches inside SBA (esp. .NET)

reset fabric

repair fabric

redeploy CS databases

repair SBA image and re-deploy from scratch

some relevant links I collected so far:

https://technet.microsoft.com/en-us/library/jj945604(v=ocs.15).aspx

https://d1it.wordpress.com/2014/01/26/lync-2013-sba-front-end-service-fails-to-start/

http://ucready.com/lync-front-end-service-rtcsrv-wont-start/

https://www.softwareab.net/wordpress/lync-server-2013-front-end-event-32174/

https://social.technet.microsoft.com/Forums/ie/en-US/ada3e098-5e17-4568-9349-81b6c20d1963/lync-2013-problem-with-lyss-database-operation-getlyssdbusage?forum=lyncdeploy

https://social.technet.microsoft.com/Forums/lync/en-US/6d68e1d1-43b3-4917-aa52-1b7f78ab356e/lyss-database-error-in-lync-log-on-the-front-end-server-enterprise-edition?forum=lyncdeploy

update: nothing really helped, we did completely redeploy from usb key. 

Azure MFA and TMG 2010

http://techgenix.com/configure-windows-azure-multi-factor-authentication-forefront-threat-management-gateway-tmg-2010/ 

Sharepoint 2010 Extranet prompts for usernane

https://blogs.technet.microsoft.com/office_integration__sharepoint/2014/02/24/prompted-for-username-and-password-when-opening-an-office-file-from-a-web-server/

Add extranet URL to trusted sites in IE.

Login as private computer.

If you use form based auhtnetication enable persistent cookies.

How to open CRM demo at Microsoft

https://blogs.technet.microsoft.com/uspartner_ts2team/2016/05/03/microsoft-demo-tools-and-hands-on-experiences-for-partners/

Skype for Business/ Lync meeting expiration

Non-recurring meetings will expire in 2 weeks, if someone will opens it on 15th days  after meeting end date the URL will not work with error as below. I think 14 days is hardcoded, I’m not sure we can change it – refer to http://www.justin-morris.net/lync-conference-expiration-and-deactivation-explained/

To avoid the issue, create a recurring meeting, they will expire after farthest occurrence in the future.

About timestamp – note it is hardcoded to UTC time zone. 

Error:

We're having trouble getting you into the meeting.

This meeting may have expired, or it's possible you're using a bad URL. If the latter, try calling into the meeting using the phone number on the invite, or ask the organizer to drag you into the meeting from the Contacts list.

Machine:xxJoin attempted at(UTC):05/05/2017 07:52:54CorrelationId:94320997User Agent:Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.96 Safari/537.36Accept Header:text/htmlapplication/xhtml+xmlapplication/xml;q=0.9image/webp*/*;q=0.8Incoming URL:https://yyyTelemetryId:ffcc417b-9794-4445-8110-a530a3016ebdError:Invalid Conference organizer or Conference ID