Policy
Set maximum web service default timeout
This policy setting allows you to specify the maximum timeout in milliseconds for the web service shim. This maximum value is enforced for applications that do not respect the default. If you enable this policy setting, you may specify the maximum timeout in milliseconds for the web service shim. If you disable or do not configure this policy setting, no maximum limit will be enforced.
1b9528685922L_WebServiceMaxTimeoutRegistry
Copy registry mappings
HKCU\software\policies\microsoft\office\16.0\common\business data\limits\wcf\timeout\maxPolicy notes
This policy setting allows you to specify the maximum timeout in milliseconds for the web service shim. This maximum value is enforced for applications that do not respect the default. If you enable this policy setting, you may specify the maximum timeout in milliseconds for the web service shim. If you disable or do not configure this policy setting, no maximum limit will be enforced.