After enabling the Salesforce Microsoft Teams Integration, users who attempt to log in to the Salesforce application inside Microsoft Teams receive the following error
Share these details with your Salesforce admin. Error: [object ProgressEvent] at XMLHttpRequest.g.onerror (https://us-01.scrt.sfdc.sh/teams/v1/assets/build/lib/lightning/lightning.out.delegate.af013eddb21046ac1a9550c5ef393ed0.js:1:645)
Root Cause: This error is caused by the "Lock sessions to the IP address from which they originated" setting in Salesforce Session Settings. When this setting is enabled, the Salesforce session is locked to a specific IP address. The Microsoft Teams application accesses Salesforce from a different IP context, causing the session validation to fail and producing this error.
See also:
Enable Salesforce Microsoft Teams Integration
To resolve this error, disable the "Lock sessions to the IP address from which they originated" setting in Salesforce Session Settings.
000390469

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