Troubleshooting: Files remain blocked after unblocking them manually - Security Center 5.7 GA

Security Center Installation and Upgrade Guide 5.7 GA

Applies to
Security Center 5.7 GA
Last updated
Content type
Guides > Installation guides
English (United States)
Security Center

Use streams.exe to unblock Security Center installation package files that remain blocked after manual intervention.

What you should know

You have to run streams.exe only on those files that remain blocked after attempting to manually unblock them fails. The error message that appears during installation resembles: “Setup detected blocked file(s) in the download package. Setup will stop. To restart the installation, unblock the downloaded package.”


  1. Download streams.exe from
  2. Open a command prompt window.
  3. Enter streams.exe -d <filename>, where <filename> is the name of the file that needs to be unblocked.

After you finish

If you unblocked the entire ZIP installation package (not specific files contained in it), you must extract the package again prior to installing Security Center.