Error Code 502 Proxy Error Isa 2006
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502 Proxy Error Apache Error Reading From Remote Server
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502 Proxy Error Whenever an ISA or TMG server throws a 502 Proxy Error your way, you know you are probably in for a real hurdle. But with a little familiarity with what a 502 error means, and how it can
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be fixed, you will be back in business in little time. First, let’s take a look at 502 proxy error chrome the definition of 502 HTTP response code: 502 Bad Gateway The server was acting as a gateway or proxy and received an invalid response from the 502 proxy error web service upstream server. Pay close attention to what that is saying. The proxy (meaning your ISA or TMG server) received an invalid response from the upstream server (implying that the internal webserver that you are publishing!). Unfortunately that is not always the case as https://support.microsoft.com/en-us/kb/935693 ISA and TMG can throw that error when they are unhappy about something that a normal browser would readily accept. They can also throw one of several different kinds of 502 depending on the circumstances. Understanding is critical to a quick resolution. Don’t just stop reading at 502, check the rest of the response. Here is how to determine whether the problem is with your ISA/TMG, or on the internal server: 1. Open a browser on the internal network. 2. Access the URL in question. 3. http://www.chicagotech.net/msapps/isa1.htm If you can view the content successfully, the problem is with your ISA/TMG. If not, the problem is with your webserver. Since this post is about ISA and TMG, let’s assume you are able to view the content internally just fine, so we’ll keep discussing ISA/TMG. 4. Go to your log viewer. In ISA that is Monitoring, or in TMG that is in Logs & Reports. 5. Edit the filter to look at live logs and have the user try again, or filter on the time range to see the error. Add the “Filter by” criteria for HTTP Status Code, and set it equal to 502. 6. Run the query, and examine the results. Some of the frequent causes of ISA/TMG generating 502s are: • A 502 can be thrown by the ISA/TMG when content filtering is enabled and something in the response is being blocked. Disable content filtering and see if you are then able to access the resource. If you are, look at the header in one of the logged errors (in your log, click the more information link on the error) and see what content type is being returned by the published server. Authorize that in your content filter. • If you are using ISA/TMG as a client proxy, and the destination server is running on a non-standard port, you can encounter this error. Create an access rule allowing the non-standard ports. • “502 Proxy Error. No data record is available. (11004)” is generated when the ISA/TMG cannot resolve the internal reso
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring http://stackoverflow.com/questions/486517/error-code-502-proxy-error-the-isa-server-denied-the-specified-uniform-resourc developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error Code: 502 Proxy Error. The ISA Server denied the specified Uniform Resource Locator (URL). (12202) up vote 0 down vote favorite I am getting above error in some machines but 502 proxy not in some machines while accessing the documents. http proxy isaserver share|improve this question edited Mar 25 '09 at 22:53 Bravax 8,47762962 asked Jan 28 '09 at 4:49 Santosh add a comment| 2 Answers 2 active oldest votes up vote 0 down vote accepted More information in your question might help, but after a quick google I found this forum which may answer your question (there appears to be a hotfix that may help). share|improve this answer answered Jan 502 proxy error 28 '09 at 6:02 Marc Novakowski 30.3k64857 Thanks, actually in a single network from some machines I am able to access the documents present in a website correctly but from some machines for other users not able to, they are getting this error 502 –Santosh Jan 28 '09 at 6:09 add a comment| up vote 1 down vote Open the ISA server2006 and create a role and allow networks internal to allow internal and external. Restart isa services, and it will be work fine. share|improve this answer edited Nov 8 '12 at 11:41 Tom 1,4761221 answered Oct 27 '11 at 8:07 rupesh 211 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. asked 7 years ago viewed 18659 times active 3 years ago Related 1Error accessing uncompiled pages using ISA Server 2006 SP11Is it correct to return a 502 status code when it's my proxy that has an internal error?2Error Code: 502 Proxy Error. The ISA Server denied the specified Uniform Resource Locator1Fiddler: Error 502 Proxy Error13WCF Client - 407 Proxy Authentication Required while running webservice0HTTP Proxy Server Java error1cannot import repo from from http://localhost/xxx/xxx.gi