installing Maintenance Pack Fails

Products

• Data Loss Prevention Enforce

Issue/Introduction

I receive the error message shown below, when attempting to install Maintenance Pack updates to v15.8.

"The installation source for this product is not available. Verify that the source exists and that you can access it."

Environment

Release : 15.8 MP3

Cause

There appears to be an issue when trying to run a Windows MSI application and the system needs to be rebooted.

Resolution

Rebooting the system released what might have been a MSI hung process.

Additional Information

Error code 1619.