NOTE: The following permissions are required for automatic updating:
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The user account for updating requires write permissions for the application directory. 
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The user account for updating requires the local security policy Log on as a batch job. 
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The user account running the application pool requires the Replace a process level token and Adjust memory quotas for a process local security policies. 
The automatic update is configured in the Web Designer Configuration Editor in the Automatic update pane.
To configure the automatic update of the web application
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Open the Web Designer Configuration Editor. 
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In the Automatic updates pane, set the Enable automatic updates option. 
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Define the user account for the automatic update. The user account is used to add or replace files in the application directory. - 
Use IIS credentials for update: Set this option to use the user account under which the application pool is run for the updates. 
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Use other credentials for updates: To use a different user account, set this option. Specify the domain, the user name, and the user password. 
 
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