This step-by-step article describes how to turn on debug
logging for the Windows Time service (also known as W32time). If you are an
administrator, you can use the debug logging feature of the Windows Time
service to help troubleshoot issues. Note
Microsoft recommends that you use debug logging after you have
performed all other troubleshooting steps. Because of the nature of the
detailed information in the debug log, you may have to contact a Microsoft
Turn On Debug Logging for the Windows Time Service Important
This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
How to back up and restore the registry in Windows
To turn on debug logging in the Windows Time
- Start Registry Editor.
- Locate and then click the following registry key:
- On the Edit menu, click New
Value, and then add the following registry values:
- Value Name: FileLogSize
Data Type: DWORD
Value data: 10000000
registry value specifies the size of the log file in bytes.
A value of 10000000 bytes will limit the log file to approximately 10 MB.
- Value name: FileLogName
Data Type: String
This registry value specifies the
location of the log file. The path is not fixed. You can use a different path.
- Value name: FileLogEntries
Data Type: String
registry value specifies the level of detail of the information in the debug
log. If you must have more detailed logging information, contact a Microsoft
Note The Data Type value must be of type REG_SZ (String). You must
type the value exactly as shown (that is, type 0-116).
The highest possible value is 0-300 for most detailed logging. The meaning of
this value is: Log all entries within the range of 0 and 116.