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7 April 2017

Google Chrome Preferences Cannot Be Read

google chrome preferences cannot be read I have a problem every time I open the chrome. I'm getting the error message:

  • Your preferences cannot be read.
  • Some features may be unavailable and changes to preferences won't be saved.
  • So, I have to sign in at chrome every fresh start.

I have search the web and the solution to reinstall chrome doesn't work for me. I find that the problem is a missing folder but I don't know who.

My operating system is Windows 8. Any help to overcome with my problem is more than appreciated.


  1. Exit Google Chrome completely.
  2. Enter the keyboard shortcut Windows key+E to open Windows Explorer. In the Windows Explorer window that appears enter the following in the address bar: %LOCALAPPDATA%\Google\Chrome\User Data\
  3. Locate the folder called "Default" in the directory window that opens and rename it as "Backup default."
  4. Try opening Google Chrome again. A new "Default" folder is automatically created as you start using the browser.


fix, error: preference files cannot read."

  • go to control panel
  • programs
  • uninstall
  • click on program getting error.
  • click repair

Google Chrome Disable Browser Cache

google chrome disable browser cache I am modifying a site's appearance (CSS modifications) but can't see the result on Chrome because of annoying persistent cache. I tried Shift+refresh but it doesn't work.

How can I disable the cache temporarily or refresh the page in some way that I could see the changes?


he Chrome DevTools can disable the cache.

F12 or Right-click and Inspect Element to open the DevTools. Now click Network in the toolbar. Finally, check the Disable cache checkbox at the top.

Keep in mind, and as a tweet from @ChromiumDev stated, this setting is only active while devtools is open.

Solution 2

  • Pull up the Chrome developer console by pressing F12 and then (with the console open):
  • Right click (or hold left click) on the reload button at the top of the browser and select "Empty Cache and Hard Reload."
  • This will go beyond "Hard Reload" to empty the cache entirely, ensuring that anything downloaded via javascript or etc. will also avoid using the cache. You don't have to mess with settings or anything, it's a quick 1-shot solution.

Can't Open Google Chrome - Solved

can't open google chrome Today, Chrome Developer Tool suddenly can't open, press F12 have no reaction, the menu is grey Unstall and installed ver 45 or 47, won't open

My system is Win7(x64), I try to open Regedit, and can't find "DeveloperToolsDisabled", and type "chrome://policy/" in url bar, can see DeveloperToolsDisabled is true


Download and install fresh copy of chromes setup

Using Google Chrome Web Speech Api

google chrome web speech api Do google Chrome extensions support Chrome's Web Speech speech recognition API? I have included some javascript to create a speech recognition object, but when I launch my extension, I am not prompted for microphone access.

This is not an issue with my code. I have searched on google, but I can't find any information on whether Chrome extensions support the Web Speech API. I just want a yes/no answer.

Note: I believe the WebSpeech API won't work for local files.


Update: Based on RobW's answer, this answer is now out of date, and the Web Speech API is now usable inside of extensions. (Unfortunately, I can't delete this answer unless the OP un-accepts it.)

The answer is not yet. Pages accessed through chrome-extension: URLs cannot access any media-input APIs, including speechRecognition and getUserMedia. Any attempt to the use APIs will immediately trigger an error callback.

I originally thought speechRecognition could work like the geolocation API: extension popups cannot prompt for geolocation permission, but chrome-extension: pages loaded as full browser pages can prompt for permission just like a normal page. However, media APIs do not behave this way; they fail regardless of whether the page is a popup or a full page.

There is a bug report to fix this and allow developers to specify media-access permissions in the manifest. When this bug is fixed, extensions can have a manifest-set permission that grants them automatic microphone/video access, so the inability to prompt for permission will become a non-issue (and therefore extensions with appropriate manifest permissions will be able to freely use the Speech API).

Solution 2

The Web Speech API can already be used by Chrome extensions, even in the background page and extension button popups. The fact that it works is not necessarily an intended feature, and I have previously explained how it works and why it works in this answer to How to use webrtc insde google chrome extension?. The previous explanation is about WebRTC, but it applies equally to Web Speech, and can be used as follows:

Instantiate a webkitSpeechRecognition instance and start recording.
If a permission error is detected (onerror being triggered with event.error === 'not-allowed'), open an extension page (chrome-extension://[ID]/yourpage.html). This extension page can be opened in a new window, tab or iframe.
From this page, request access to the microphone. getUserMedia and SpeechRecognition both share the (persistent) audio permission, so to detect whether audio recording is allowed, you could use getUserMedia to request the permission without activating speech recognition. For instance:
    audio: true,
}, function(stream) {
    // Now you know that you have audio permission. Do whatever you want...
}, function() {
    // Aw. No permission (or no microphone available).

Google Chrome Auto Refresh Turn Off

google chrome auto refresh turn off I would like to stop autorefresh page in Google Chrome, because it is a very annoying and memory consuming issue and I can't work with the developers tools. I'm trying to delete the refresh and setTimeout function from the script using Chrome's developers tools but I have no results. How can I block this annoying feature even for a while from the console?


Since <meta http-equiv="Refresh" content="300; URL=?refresh_ce"> removal using DevTools is not sufficient (it doesn't stop page from refreshing) I've executed this code in the console: window.onbeforeunload = function(){ return 'Reload?';}. onbeforeunload event will fire before page reload and you'll be able to choose to abort reloading. From what I've tested the dialog shows up only once.

You can simply disable feature of page auto refresh, by following steps:

  • Open chrome browser tab
  • Type in your address bar chrome://flags
  • Search #automatic-tab-discarding and make it 'Disabled' from 'Default'
  • Restart your browser
  • you are done !
  • enter image description here

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