Registry Key Settings for the Upgrade Assessment Tool

To use the registry to configure settings or start actions for the Upgrade Assessment Tool

1. Open the registry on the computer that runs the Upgrade Assessment Tool.

   Warning

   If you use the Registry Editor incorrectly, you might cause serious problems that might require you to reinstall the operating system. Microsoft cannot guarantee that you can solve problems that result from using the Registry Editor incorrectly. Use the Registry Editor at your own risk.

2. Locate the UAT sub-key by browsing to the following path:

   - For a 32-bit operating system:
   
     **HKEY\_LOCAL\_MACHINE\\Software\\Microsoft\\SMS\\UAT**
   
   - For a 64-bit operating system:
   
     **HKEY\_LOCAL\_MACHINE\\Software\\Wow6432Node\\Microsoft\\SMS\\UAT**
   

3. Use the following table to configure the appropriate registry key to specify a setting or start an action for the Upgrade Assessment Tool.

   Registry key value	Purpose	Default value
   Clean Up	Set the value to 1 to start the process to remove all upgrade assessment data from the Configuration Manager site database.	0 Use 1 to start the process.
   Poll Interval	The interval between polling for sync service (in seconds)	900
   SQL Read Batch Size	Specifies the maximum number of rows in the Application Compatibility Toolkit (ACT) SQL Server database that the synchronization service reads at a time.	500000
   SQL Bulk Copy Batch Size	Specifies the maximum number of rows that the synchronization service copies to a temporary table in the Configuration Manager site database.	500
   SQL Merge Batch Size	Specifies the maximum number of rows that are merged from a temporary table to a destination table in the Configuration Manager site database.	1000
   SQL Merge Delay	Specifies the delay (in milliseconds) before the process is started to merge the data from a temporary table to a destination table.	0