Windows 10 upgrade assistant stuck at 99%

I’ve fixed this problem simply by updating windows 7 past SP1 and when that fails I’ve installed the convenience rollup etc. but when those failed me this is what worked.

Before using the Windows 10 Upgrade Assistant, perform these steps:

  • set Windows 7 updates to “Never install updates“, (control panel ->updates).
  • Stop the update service by right clicking on the command prompt, and choose “Run as administrator“.
  • Type

    It should say: “Windows update service is stopping….windows update service is stopped.

  • Windows update service is stopping

After completing the above steps, start the Windows 10 Upgrade assistant, and it should complete.

JNLP files, association, and subsequent failure

I cant say I know a lot about JNLP files.. other then that they’re typically opened by “Java Web Start” an application hiding within the Java program folder under the guise of “javaws” …and that in itself is a tidbit of information I didnt know until I had the joy of troubleshooting a JNLP that java wouldnt open.

javaws file location

your version of java may be different

The Problem: you have a web application that wont execute.. the jnlp downloads but once its executed, windows doesn’t know what program to use.

the Details: windows prompts for a program to open the JNLP but there is none… even in the java folder there is nothing that opens it.. redownloading the latest java release doesnt change this..

The Solution: after much troubleshooting, and frustration, the only fix was to downgrade java.
Resources: Java’s website explaining Java web start.