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Important Updates for the ArcGIS Platform and Transport Layer Security (TLS) Protocol SupportEsri's ArcGIS Online have transitioned to utilizing TLS 1.2 only on April 16 2019, and some clients/versions will experience a disruption of service if they do not follow the steps described in Esri's TLS_Guidance

This Esri document also lists which clients require update/fixes to support TLS 1.2, including what Esri products and a list of older browsers.


Esri has established a support page to help customers at https://support.esri.com/en/tls.

How will this affect Nearmap users?

When connecting to ArcGIS Online via ArcMap:

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You may encounter the following error:

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To fix this you will need to update your software with the patch as described in: Install the TLS 1.2 patch on ArcGIS Desktop.


You can also Test ArcGIS TLS 1.2 connections to ArcGIS Online.