Web sites stop opening - why? - web-services

My internet connection behaves in a weird way.
At some point, websites stop opening (I am using Chrome), but the tray icon (Wi-Fi or Lan) indicates that everything is alright, and the TroubleShoot Diagnostics tool tells this as well.
One thing to notice is that when I enter Google search requests at google.com, then it provides me with search results. However, when clicking on any of the search results, then websites do not open.
Sometimes, internet gets "frozen" in this way when I open a Jupyter notebook, which also stops working (which is strange, since it uses localhost at 127.0.0.1:8888).
ping 127.0.0.1 does not show any problems as well, and the file 'hosts' also looks OK (there is the line '127.0.0.1 localhost').
What could be the reason and how else I could trace the problem?
Update: here is the screenshot of the Chrome's development tools (Network tab)
All three error are ERR_TIME_OUT

Sounds like you may have blocked some site/sites with Chrome. You can verify by using a different browser and trying out sites that you can't get to in Chrome.
Another good troubleshooting method is to use Chrome Developer Tools. On Mac, the shortcut is Command+Option+I. Open the developer tools and go to a site that's not working. You should see a bunch of error messages in the console (if the console is not shown, press Esc). Also, go to the 'Network' tab and check if any of the requests are in red.
If the red request status says 'blocked' then open the console back up (Esc button) and click the 3 dots in the top left corner of the console pane. Select 'Request Blocking' and deselect the checkbox that says 'Enable request blocking'
Another possibility is that you've disabled cookies on certain sites. In that case, in the navigation bar, go to chrome://settings/cookies and remove any entries from 'Sites that can never use cookies'

Related

AWS Connect: Custom CCP bring to front

I'm aware that the Amazon Connect CCP is based on the idea that it can be developed and integrated in any website at will without the restrictions of a closed product. However the fact that it is embedded, means it has some agent usability drawbacks. While browsing to multiple tabs you can eventually loose the tab where CCP resides. This means that if the agents needs to mute, hold, ... it might take a while before they find the right tab.
Is it possible to create a CCP that it can be always visible?
Thanks,
I set up an external screen pop as detailed in the AWS blog, and I have the issue on Windows 10 and Chrome. When call coming the pop-up notification apears, when clicking on the pop-up notification, you are not redirected to the CCP browser window.
However, I also tried the same setup on Firefox and the issue disappears: when clicking on the pop-up notification, the CCP browser tab gains focus correctly. Additionally, I set up another screen pop with a different instance and S3 bucket, using the files provided in the blog, and it yielded the same result: the issue appears with Chrome, but not with Firefox. It all points in the direction of it being an issue related to the integration between Chrome and the Windows pop-up notifications (the same problem for MacOS).

Debugging of Chromecast

I have implemented an Android application, which is for playing movies via GoogleCast. Everything works fine, but I need to enable a Chrome Remote Debugger.
I found an article here. I proceeded step by step according to instructions in this article, but I can see nothing in console.
IP address of my Chromecast is 10.0.0.36. In Chrome, I go to http://10.0.0.36:9222. The page is displayed and it looks like this:
I click on link Remote Debugging (AppEngine) and then I see the console. I type cast.receiver.logger.setLevelValue(cast.receiver.LoggerLevel.DEBUG); to this console.
According to instructions in article mentioned above, that's all and now it should work, but I can see anything in console.
Could you tell me, please, what I am doing wrong? Thank you.
In your URL bar, there should be a shield icon towards the right side. Click on that and enable scripts.

How to prevent IE from showing "Internet Explorer restricted this webpage from running scripts ..." message when opening just a text file?

In my software I need to open a plain text file for viewing only. I chose to use a default web browser to do that since it is most certainly available on any system. (Note that I can't use Notepad because of the "for viewing only" restriction.)
So to do that I do the following:
ShellExecute(NULL, L"open", TextFilePath, NULL, NULL, SW_SHOWNORMAL);
This works great on all web browsers, except, ... (you guessed it) IE. That shows this message:
"Internet Explorer restricted this webpage from running scripts or
ActiveX controls"
The text file obviously doesn't have any scripts or Active X controls. It's just a .txt file! But understandably this message worries some users that think that my program tries to run something "bad" on their computer.
So I'm curious, if there a way to prevent this dumb message without modifying any global IE settings?
Maybe you should execute the following steps:
Go to internet options
Tab "advanced"
Scroll down to Security
Check mark "Allow active content to run in files on My Computer
Hopefully this will work.

web services access not being reached thru the browser

I am trying to reference my .asmx webservices in .NET but my server is not exposed to the internet. When I put on the following address I get the message mentioned below. What's the reason for not being able to see the directory? Am I missing something in my IIS configuraction? Am I missing anything in my permissions? Just as reference I have other folders with webservices and I have the same issue.
When I login to the server I am doing it with my windows user and password (I am using windows authentication). It's necessary to mention that when I put the URL I am getting a popup screen to put in my userid and password but it seems that's not able to validate since keeps asking me a couple of times. Let me know if you need more information to address this issue .
http://appsvr02/Inetpub/wwwroot/DevWebApi/
Internet Explorer cannot display the webpage
What you can try:
It appears you are connected to the Internet, but you might want to try to reconnect to the Internet.
Retype the address.
Go back to the previous page.
Most likely causes:
•You are not connected to the Internet.
•The website is encountering problems.
•There might be a typing error in the address.
More information
This problem can be caused by a variety of issues, including:
•Internet connectivity has been lost.
•The website is temporarily unavailable.
•The Domain Name Server (DNS) is not reachable.
•The Domain Name Server (DNS) does not have a listing for the website's domain.
•If this is an HTTPS (secure) address, click tools, click Internet Options, click Advanced, and check to be sure the SSL and TLS protocols are enabled under the security section.
For offline users
You can still view subscribed feeds and some recently viewed webpages.
To view subscribed feeds
1.Click the Favorites Center button , click Feeds, and then click the feed you want to view.
To view recently visited webpages (might not work on all pages)
1.Click Tools , and then click Work Offline.
2.Click the Favorites Center button , click History, and then click the page you want to view.
Try http://appsvr02/DevWebApi.
You shouldn't need to specify the full path, as IIS serves from wwwroot by default.
I don't know what I did but I was able to see it this time. thank youa all for your input. This is how the path to my server shows now. http://appsvr02/DevWeApi/Owner.asmx

IE8 losing session cookies in popup windows

We have an ASP.NET application that uses Forms Auth. When users log in, a session ID cookie and a Forms Auth ticket (stored as a cookie) are generated. These are session cookies, not permanent cookies. It is intentional and desirable that when the browser closes, the user is effectively logged out.
Once a user logs in, a new window is popped up using window.open('location here');. The page that is opened is effectively the workspace the user works in throughout the rest of their session. From this page, other pop-ups are also used.
Lately, we've had a number of customers (all using latest versions of IE8) complaining that the when they log in, the initial pop-up takes them back to the log in screen rather than their homepage. Alternately, users can sometimes log in, get to the homepage (which again, is in a new pop up window), and it all seems fine, until any additional pop-ups are created, where it starts redirecting them to the log in screen again.
In attempting to troubleshoot the issue, I've used good old Fiddler. When the problem starts manifesting, I've noticed that the browser is not sending up the ASP.NET session ID session cookie OR the Forms Auth ticket session cookie, even though the response to the log in POST clearly pushes down those cookies.
What's more strange is if I CTRL+N to open a new window from the popped-up window that is missing the session cookies, then manually type in the URL to the home page, those cookies magically appear again. However, subsequent window.open(); calls will continue to be broken, not sending the session cookies and taking the user to the log in screen.
It's important to note that sometimes, for seemingly no good reason, those same users can suddenly log in and work normally for a while, then it goes back to broken.
Now, I've ensured that there are no browser add-ons, plug-ins, toolbars, etc. are running. I've added our site as a trusted site and dropped the security settings to Low, I've modified the Cookie Privacy policy to "accept all" and even disabled automatic policy settings, manually forcing it to accept everything and include session cookies. Nothing appears to affect it.
Also note the web application resides on a single server. There is no load balancing, web gardens, server farms, clusters, etc. The server does reside behind an ISA server, but other than that it's pretty straight forward.
I've been searching around for days and haven't found anything actionable. Heck, sometimes I can't even reproduce it reliably. I have found a few references to people having this same problem, but they seem to be referencing an issue that was allegedly fixed in a beta or RC release (example: IE8 loses cookies when opening a new window after a redirect). These are release versions of IE, with up-to-date patches.
I'm aware that I can try to set permanent cookies instead of session cookies. However, this has drastic security implications for our application.
Update
It seems that the problem automagically goes away when the user is added as a Local Administrator on the machine. Only time will tell if this change permanently (and positively) affects this problem.
Time to bust out ProcMon and see if there is a resource access problem.
Update #2
It seems there are multiple angles to what appears to be a singular problem. I reported long ago that making the user a local administrator seemed to help. And it did, for a number of users. Of course, that's not really a solution, but it did let us hobble along.
Then more users started reporting the issue, and the admin fix was not helping. The users seemed to be mostly Win7, but Vista was also affected. They also seemed to mostly be 64-bit installations.
Setting the TabProcGrowth to 0 or 1 (either worked) as suggested by some members below seems to have largely addressed the issue. So, I'm going to move my accepted answer to the first person that suggested that, as it has had significantly more impact.
This has been an incredibly frustrating issue to attempt to solve, since it is difficult to reproduce and often occurs with users that I do not have direct communication with, or by the time I get to them it doesn't appear to be working. All I can say is something is not right with the session merging feature, but I don't have much data to feed to Microsoft to find a permanent fix.
This is 'new' functionality in IE8!
Checkj out the IE8 blog below to read about it.
http://blogs.msdn.com/askie/archive/2009/03/09/opening-a-new-tab-may-launch-a-new-process-with-internet-explorer-8-0.aspx
IE8 can use multiple processes for handling an x number of IE windows. When you cross a process space, you loose your cookies (Asp.Net session ID seems to be retained over this process boundry).
I personally think it's broken or a bug. As we know, when browing to the 'same domain target' cookies should be maintained and resent. That IE8 has different processing behavior for security.. Great! that it is behaving badly and 'drops cookies even if going to the same target domain in another window' is just a bug in my view.
You can modify the number of processes IE8 uses through the internet explorer options ehh.. modifying a registry setting!!!!!! (this is what makes it a bug in my view. IE providing a UI to modify these settings would make it 'enterprise level acceptable'.
Regard,
Marvin Smit
There are multiple possibilities behind this -
UAC & Vista (Had to crop up!!). Specifically, look for protected mode behavior.
This could be an actual problem with the Session Merging feature in IE8. More so because opening a new window via the Ctrl+N shortcut causes the cookies to be magically sent in your case.
An issue with an older build of IE (I know you have stated that your customers are using the latest build). You might want to check the details available at Microsoft Connect for bug IDs 408806 and 392032.
We solved this problem by changing the "Set tab process growth" to 0.
Although, we didn't have protected mode turned on and the zone was "Intranet". Evidently this is a problem/bug with Windows 7 64Bit as others have stated.
This page (#4) lead me to the solution: http://blog.httpwatch.com/2009/04/07/seven-things-you-should-known-about-ie-8/
Near as I can tell, another change to cookies across tabs just went live in this security update from November 12, 2013 that is breaking functionality in our app in all versions of IE. We're doing OpenID auth in a popup window so as to not have to redirect the user away from the page they were browsing when they first clicked the Login link. The session cookie for the login is correctly being sent down in the request in the popup window, but it never gets seen by the main browser window, so the next request to the server doesn't have that session cookie on it like it should, and thus logging in never actually works.
Does anyone have any possible solutions to this?
We had this problem on IE6,7 and 8 .The scenario is parent window(1) opens a modal window(2),modal window has a link to a non-modal window (3). I used to get a different session Id in the 3rd window.
Workaround mentioned here fixed the issue http://support.microsoft.com/kb/831678
Since IE8 we (and our customers) are also experiencing the same issue. We have an asp service for creating forms. This application uses new windows for adding elements or managing user accounts e.g. Randomly (when opening a new window), the application doesn't get the required session id for authentication allong with other 'permanent' cookies. Hence, the session id is a temporary cookie. Most of the time it goes well, but other times the session is broken every time a new window is opened. We have to advise our customers to close all IE windows and start over again.
As a web developer I use IE extensively. Personally, I am not experiencing the above issue. But I think a related one. A few times a day IE totally hangs (does not respond anymore) when opening a new window. When I kill a certain IE process using the task manager, IE starts responding again. But in most cases it's better to start all over with a clean new instance of IE. For this reason I just kill the process with the least ram usage which causes all IE processes to quit.
Microsoft saying these issues/bugs are squashed in the final version does not give me trust of their effort solving the issue still be experienced.
I also found a workable fix for this problem. There seems to be a problem with how IE8 handles opening servlets in another window with a relative path such as /test. It seems to be opening a new session as well as a new window. Our workable fix is that instead of opening a new window with a relative path, we just used a jsp page. So when we navigate to a URL, we do not navigate to /test anymore.We navigate to a specific file. In the jsp file, we forward the request to the relative path. This seems to work, which is kind of awkward, since the only difference is that we are placing a specific file in between.
I hope this helps.
I know this problem since IE 5, so I only use session's variables in modal pop-up windows...
When I open a non-modal pop-up window, I replace all session's variables with ASP.NET cache and new object collections...
But it's very tiresome!
Other browsers (i.e. Firefox) don't have this problem...
I believe this is actually a bug in IE; I have reported it here to see what feedback I get: http://social.msdn.microsoft.com/Forums/en-US/83bb3b91-1c1f-4d51-9281-9bc5f51d3640/log-in-fails-cookie-is-not-sent-to-originating-tab?forum=iewebdevelopment
I have a similar, though not identical problem. We load a webpage that opens a popup with window.open() into an IE browser control. On machines that have either IE6 and IE8, the popup window is always assigned a new SessionID by ASP when launched from the control. However, when launched from a normal browser (IE or Firefox), the popup window gets the existing SessionID.
I can see when launching from the control that a new iexplore.exe process is spawned; thus the session loss behavior makes sense given what has been mentioned about in-memory cookies not being carried over to the new process.
I'm still trying to figure out a workaround myself ...
Update
Figured out a workable fix! It is possible to subclass SessionIDManager and specify that this class should be used instead of the default (<sessionState sessionIDManagerType="..."> in Web.config). The subclass can look for a query parameter containing the existing session id in an override of CreateSessionID(), and return it if found. This essentially allows a page to request being "merged" into an existing session it has knowledge of.
The call to window.open() then simply needs that query parameter specified in its URL.
Haw-Bin
Had a similar problem with PHP5 and IE8. When opening one certain popup window in Javascript with window.open, IE8 lost the session cookie and forced the user to login agan.
Meanwhile, other popup windows worked OK.
The culprit turned out to be an image tag. The template system generates image src = values dynamically and a missing image resulted in an image tag with an empty src clause (
I supect this has something to do with IE interpreting the empty src-tag as an insecure URL and isolating the session in the popup without informing the user.
I was running into a similar issue with using session variables to pass values to a pop-up window. I just ended up writing the values to a persistent cookie and then reading the cookie in the popup window. This may not work with the issue you were having with forms authentication, but if are just using session variables to pass some values to a window in IE8, persistent cookies seems to have worked for me.
edit: see also this thread
You Can Also Use the LocalStoprage method to reset the value in parent window.
localStorage("Key")="Value";//Javascript