The server could not be reached or validated: Timeout expired. The Time out expired prior to obtaining a connection from the pool

In this article, we will discuss the fix to ‘The server could not be reached or validated: Timeout expired. The Time out expired prior to obtaining a connection from the pool”. DriveLock is a security solution designed for endpoint security (data protection). It provides features that help organizations secure their sensitive data, prevent data breaches, and manage devices effectively. Please see How to download and install DriveLock on Windows, and how to Fix Windows Admin Center cannot be reached.

Also, see “Hub Transport Server: Resolving ‘Failed to Reach Running Status“, and “How to Fix SmartScreen can’t be reached right now on Windows 10 and 11“.

Why was the error prompted DriveLock ‘The server could not be reached or validated”?

The server could not be reached or validated” error below was prompted when starting the DriveLock Enterprise service.

This usually happens when the connection pooling problems are related to “connection leaks.” The application did not close its database connections correctly and consistently.

There are different ways to fix this. For my specific environment, I was having connection issues with my DriveLock Enterprise Service (DES). Please see how to Resolve Account restrictions are preventing this user from signing in: User Account Password has expired.

For me, a restart of the services as shown here did not solve my issue.

Please see MsSQL Connection timeout and timeout period expired, and how to fix RDP Users are unable to change Passwords.

Solution

Restarted my DES server and this issue was cleared.

This solution was optimal because it is a test environment. To solve this correctly, follow the steps below.

Increase Max Pool Size connection string parameter value. 
Another way to get extra connections is to clear one or all of the pools. (This i did by restarting the server) ;)

I hope you found this blog post on “The server could not be reached or validated: Timeout expired. The Time out expired prior to obtaining a connection from the pool” helpful. Be sure to leave a comment or question.