When Remote Authentication Dial-In User Service (RADIUS) uses an ODBC data source for validation data, it cannot re-establish a connection to the ODBC data source if the connection is broken (database crash, database maintenance, network storm, hardware problems, electrical outages).
No retry logic was implemented for ODBC, so the service fails to start if the database is unavailable, and fails to reconnect if the server is unreachable for any reason.
Windows NT Server or Workstation 4.0
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or
the individual software update. For information on obtaining the
latest service pack, please go to:
- Windows Service Pack Center
how to obtain the latest windows nt 4.0 service pack
For information on obtaining the individual software update, contact Microsoft
Product Support Services. For a complete list of Microsoft Product Support
Services phone numbers and information on support costs, please go to the
following address on the World Wide Web:
Windows NT Server 4.0, Terminal Server Edition
To resolve this problem, obtain the latest service pack for Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the
Microsoft Knowledge Base:
How to Obtain the Latest Windows NT 4.0 Service Pack
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
This problem was first corrected in Windows NT Server version 4.0, Terminal Server Edition Service Pack 6.