Symptoms:
vRealize Business will either fail to establish a connection to Azure, or Azure collections will start to fail. The error message in /var/log/vrb/data-collector/itfm-azure-dc.log will be similar to this:
2019-01-14 21:56:05.105 ERROR [AxxxxSyncJob (Axxxx_SYNC_JOB)] c.v.i.c.d.a.AxxxxCollectionAgent - Failed to sync Axxxx data for account: <Account> for month, year
com.xxxxxx.itfm.cloud.datacollector.axxxx.util.AxxxxException: Microxxx Axxxx API server returned an unexpected response: HTTP/1.1 426 Upgrade Required, while making HTTP request: GET https://ea.axxxx.com/*