@RachelW 

We changed in the meantime the settings to the following one, because Microsoft updated the AAD Broker Plugin and schanged the version number:

[IncludeFolderTrees]
<LocalAppData>\Microsoft\Credentials
<LocalAppData>\Packages\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy
<LocalAppData>\Microsoft\IdentityCache
<LocalAppData>\Microsoft\TokenBroker

[IncludeFiles]
<AppData>\Microsoft\Teams\desktop-config.json
<AppData>\Microsoft\Teams\preauth.json
<AppData>\Microsoft\Teams\Preferences
<AppData>\Microsoft\Teams\settings.json
<AppData>\Microsoft\Teams\storage.json

[IncludeRegistryTrees]
HKCU\Software\Microsoft\Office\Teams
HKCU\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion

[ExcludeFolderTrees]
<LocalAppData>\Packages\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy\TempState

All my customers and me are working fine with this configuration