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Power BI customers in North Europe, North Central US, West US, Southeast Asia and West Europe regions restricting inbound connections from Power BI to their data sources using an IP Address may need to add the following additional IP Addresses no later than 01/26/2020 to avoid any connection failures:

North Europe
52.155.235.131
52.142.80.15
52.155.234.27
40.127.210.168
40.127.211.19
40.127.211.48

North Central US
52.252.170.13
52.252.173.81
52.252.172.170
52.252.242.228

West US
13.86.136.5
13.83.57.96
13.83.24.105
13.86.185.1

Southeast Asia
20.184.59.7
20.43.161.225
20.43.162.185

West Europe
52.137.31.103
51.105.195.36
51.105.119.226
51.105.195.88
51.105.128.131
51.136.73.236
51.124.131.156
51.124.4.191

Please note those IPs can change, please read more at Link

Power BI Dataflows users may experience issues saving queries with SAP HANA data source. As a workaround, customers can add parentheses around the function defined inside the query. Engineers are working on a fix and expect it to be deployed by end-of-day 2/2/2020.

Power BI users who installed the August or later versions of Power BI Desktop may encounter issues signing in to the Power BI service through the desktop application. As a workaround users can follow the steps in this guide to extract the MSI from the downloadable package, uninstall existing package and re-install using the MSI executable. Power BI Engineers are working on a fix and it will be packaged with February 2020(SU02) release of Power BI desktop.

Power BI users with older browser versions may encounter issues signing in to the service, please make sure you are using the latest version. Power BI supported list of browsers is documented at Link. Due to a known incompatibility bug in WebKit Link, Safari users on MacOS 11.4 or iOS12 may experience similar issues. This bug is resolved with MacOS 11.5 and iOS 13.