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Java Install Error 1603


New Member
Somehow java was uninstalled and I have tried to reinstall it thru internet explorer, goggle chrome, and firefox, all with no success. I keep getting error 1603 saying that the install did not complete. I have tried disabling my virus protection and firewall, but that did not make a difference either. I am at a loss as to what to try next.


I Like It Here
iHF Veteran
WCG Team Member
Hello and welcome to the forum Susan.

Cant take credit for this, but it comes from an excellent source.

Step 1:

Run Java-Ra.
Update defenitions.
Then click remove java runtime.
If you can run the uninstaller.
Click Next.
Then after running the uninsntaller.
Click Perform removal routine.

Then run this tool to clean out temp files and reboot your machine.

If tfc.exe does not reboot your machine then do so manually.

Step 2:

  • Hit the start Orb.
  • Right Click Computer.
  • Select Properties.
  • Advanced System Settings.
  • Enviroment Variables
  • Under System Variables.
  • Select New.

Copy and paste the words in Bold. into their respective area's.

Variable Name >>>>>>>>>> _JAVA_OPTIONS

Variable Value >>>>>>>>>>> -Xmx512M

Now hit Ok, until you can not anymore!

Reboot your machine again after this!!

Step 3:

Install Java use the offline installer.

Let us know how things are.
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