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Error: "8505,129"

To fix this problem, restart your computer. If you continue to receive this error, you need to check your Network proxy settings and run an advanced scan for potentially unwanted applications with Norton Power Eraser.


Check the Network proxy settings

  1. Press the Windows + R keys to open the Run dialog box.

  2. Type in the following text, and then press Enter.


    Internet Properties window is launched on your computer.

  3. On the Connections tab, click LAN settings.

  4. In the Local Area Network (LAN) settings dialog box, under Proxy server, ensure that none of the check boxes are selected.

  5. If you find any entries under Proxy server, uncheck the boxes and select Automatically detect settings.

    Unknown proxy server address can be an indication of potential threat or unwanted application. You must run an Advanced scan on your computer with Norton Power Eraser.

  6. Click OK.

  7. Click Apply and then click OK.

    If the problem persists, go to step 2.


Run the Norton Power Eraser - Unwanted Application Scan

  1. Download Norton Power Eraser.

  2. Click Save.

  3. Select the location as Desktop, and then click Save.

  4. To run Norton Power Eraser, double click the NPE.exe file.

    If the User Account Control window prompts, click Yes or Continue.

  5. Read the license agreement, and click Accept.

  6. In the Norton Power Eraser window, click the Unwanted Application Scan icon.

    When Norton Power Eraser completes the scan, the results are displayed in the Unwanted Apps Scan Complete window.

  7. In the Unwanted Apps Scan Complete window, next to the unwanted application or toolbar, click Uninstall.

  8. Follow the on-screen instructions.

  9. When the uninstall completes, restart the computer.

    If the issue still persists, look for the unwanted toolbars that are usually bundled with certain free programs you might have installed on your computer. To know more about removing these types of browser hijackers, read Removing unwanted toolbars from your computer.

What if this didn't work?

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DOCID: v71552856_EndUserProfile_en_us
Operating System: Windows
Last modified: 11/12/2018