Unfortunately, that event log isn't particularly helpful. Oh well, it was worth a shot.
Right, first of all, let's make sure that there are no remnants of a previous install left behind. Please follow these instructions VERY carefully - don't do anything without reading each instruction twice, fully understanding it and double checking what you're about to do before you do it. Making a mistake could damage your system and neither I nor Avast will accept responsibility for that. As long as you follow these instructions, what I'm about to ask you to do is perfectly safe. For the same of keeping it simple, I will write each separate step as a bullet point so as not to cause any confusion.
Here we go:
Open the tools we need- Start Windows Registry Editor (regedit.exe)
- Start a Command Prompt with Administrator privileges (right click icon, left click "Run as Administrator"
- Open Windows Explorer (explorer.exe)
Get uninstall string- Switch to the Windows Registry Editor
- Browser to HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Avast Secure Browser
- Double click "Uninstall String" to open the value editor
- Click in the "value data" edit box
- Press CTRL-A (that's the CTRL key and the 'A' key together) to select everything
- Press CTRL-C (that's the CTRL key and the 'C' key together) to copy everything
- Click "Cancel" to dismiss the value editor window
Attempt a clean uninstall- Switch to the Command Prompt
- Right click on the title bar, select Edit>Paste from the drop down menu
- You should now see the uninstall string copied into the Command Prompt window
- Press enter to execute the uninstall string
- If you see any errors, ignore them (we're just attempting a clean remove before we get our hands dirty)
Remove any left-over registry keys (in case of uninstall failure)- Switch to the Windows Registry Editor
- Remove HKEY_LOCAL_MACHINE\SOFTWARE\AVAST Software\Browser
- Remove HKEY_LOCAL_MACHINE\SOFTWARE\AVAST Software\Browser
- Remove HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\AVAST Software\Browser
Remove any left-over folders (in case of uninstall failure)- Switch to Windows Explorer
- Navigate to C:\Program Files (x86)\AVAST Software\
- If you see a subfolder named "Browser" you should delete it
- Navigate to C:\ProgramData\AVAST Software
- If you see a subfolder named "Browser" you should delete it
- Navigate to %LOCALAPPDATA%\AVAST Software
- If you see a subfolder named "Browser" you should delete it
- Close Windows Explorer
Remove any left-over services (in case of uninstall failure)- Switch to the Command Prompt
- type "sc delete avast" and pres enter
- type "sc delete avastm" and pres enter
- type "sc delete AvastSecureBrowserElevationService" and pres enter
- Close Windows Registry Editor
- Close Windows Explorer
- Close the Command Prompt
- Finally, I'd recommend using CCleaner to clean your registry of any orphaned keys (link below)
At this point, all traces of Avast Secure Browser should now be eradicated from your machine.
Now, let's enable logging so that we can get some diagnostics should attempting to install the browser still fails:
- Attached you will find a zip file called JSIS_Omaha_DebugLogging.zip
- Please download this file and extract it somewhere (for example, to you Desktop)
- Inside the zip file are instructions and configuration files to enable logging for the installation process
- Please read and follow these instructions (see howto.txt - reproduced, below)
How to enable logging of the Secure Browser installation:
---------------------------------------------------------
By commandline batch
- copy the DebugBuildLogging folder to your pc
- launch Enable_Logging.bat as administrator
Manually
- copy the .avast folder to yout user folder (c:\Users\yourname)
- create c:\BrowserLogs folder
- copy AvastBrowserUpdate.ini to the root of c:\
What components are logging:
- Installer: jsis installer avast_secure_browser_*.exe
- Omaha: The AvastBrowserUpdate.exe process
Once you have followed those instructions, please attempt to reinstall the browser.
If it succeeds you can disable logging by running Disable_Logging.bat.
If it fails, please zip up the folder c:\BrowserLogs and attach that zip file here.
I hope this helps.
-thermo
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