502 Proxy Error. The Request Is Not Supported Isa
accessing websites from the web proxy clients ★★★★★★★★★★★★★★★ Suraj Singh MSFTApril 17, 20100 0 0 0 This is on ISA /TMG product blog(http://blogs.technet.com/b/isablog/archive/2010/05/24/error-502-proxy-error-the-request-is-not-supported-50-while-trying-to-access-websites-from-web-proxy-clients-behind-isa-server-2006.aspx) Comments (0) Cancel reply Name * Email * Website Follow UsPopular TagsBy pass ISA/TMG UAG Teredo high load windows update fails with 80072f8f on TMG WPAD FIM Oracle MA set up autodetect Pass The Hash IPSEC TMG VMware client cert authentication TMG ActiveSync DHCP option 252 TMG installation issue The requested resource is in use tunnel port range ISA/TMG builds Memory pool for SSL ISA /TMG Form based Authentication with LDAPS UAG DA IPHTTPS intermittent disconnection CRL WPAD autodetect Authentication delay Archives August 2016(1) June 2016(1) April 2016(1) March 2016(1) August 2015(2) May 2015(1) March 2015(1) January 2015(1) November 2014(2) All of 2016(4) All of 2015(5) All of 2014(4) All of 2013(15) All of 2012(10) All of 2011(22) All of 2010(35) All of 2009(17) Privacy & Cookies Terms of Use Trademarks © 2016 Microsoft
VSE ePO General Google Chrome OS Uncategorized UPS Backup Exec ← Not so muchresting… Active Directory Certification Authority not renewingcertificate → Error Code: 502 Proxy Error. The request is not supported.(50) September 17, 2009 Leave a comment As referenced in my last post, I had a problem with viewing a website. Whenever someone tried to view the site at work they got "Error Code: 502 Proxy Error. The request is not supported. (50)" The error is coming https://blogs.technet.microsoft.com/sooraj-sec/2010/04/17/502-proxy-error-the-request-is-not-supported50-while-accessing-websites-from-the-web-proxy-clients/ from Microsoft ISA Sever 2004, to fix this you need to enable the compression filter in ISA Server 2004 Configuration > Add-Ins > tab Web Filters > properties Compression Filter > select Enable This filer. > Ok > Apply. This not only fixed the 502 proxy error but also an issue with pages appearing "stripped down" ie only https://restingsysadmin.wordpress.com/2009/09/17/error-code-502-proxy-error-the-request-is-not-supported-50/ text, no images. Share this:ShareFacebookTwitterGoogleLike this:Like Loading... Related Filed under ISA Sever 2004 Tagged with ISA Server 2004, Microsoft About Phill McSherryPhill McSherry has been working in the Australian IT industry for over 20 years and is the technical manager and solutions architect for managed services provider Titan Solutions - www.titansolutions.com.au Leave a Reply Cancel reply Enter your comment here... Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. (LogOut/Change) You are commenting using your Twitter account. (LogOut/Change) You are commenting using your Facebook account. (LogOut/Change) You are commenting using your Google+ account. (LogOut/Change) Cancel Connecting to %s Notify me of new comments via email. RSS LinksRSS - Posts Twitter I just supported How to Prepare for Emergencies on @ThunderclapIt // @Cryptozoic thndr.me/FsrLEs 2monthsago I'm entered to win Loot Crate's Crate-a-Day Giveaway! lootcrate.com/crate-a-day-gi… #lootcrate #giveaway 2monthsago #lfgsyd Forbidden Island https://t.co/SLMofgiIaL 2monthsago I unlocked the Import master achievement in Disney Infinity! raptr.c
| Address Book | Member List | Search | FAQ | Ticket List | Log Out The request is not supported. (50) errors Users viewing this topic: none Logged http://forums.isaserver.org/The_request_is_not_supported%25_(50)_errors/m_2002076959/tm.htm in as: Guest Tree Style Printable Version All Forums >> [ISA Server 2004 General ] >> General >> The request is not supported. (50) errors Page: [1] Login Message << Older Topic Newer http://www.freelists.org/post/isalist/502-Proxy-Error-The-request-is-not-supported-50,8 Topic >> The request is not supported. (50) errors - 17.Nov.2008 11:37:20 AM PeterGriffin Posts: 2 Joined: 17.Nov.2008 Status: offline Firewall specs: -ISA2004 / SP3 (Patches are current as of 10/27/2008) -Windows 502 proxy 2003 / SP2 (Patches are current as of 10/27/2008) -ISA firewall is domain joined. -All the traffics go through ISA firewall (2 NICs) -Windows XP and Windows Vista Clients (All have firewall client installed and web proxy enabled). -DNS WPAD. -Only two ISA Networks (Internal and External) -HTTP and FTP caching are disabled. -HTTP compression is disabled -DiffSrv Preference disabled Since Friday (it could be earlier than 502 proxy error. that), users are reporting that they can't get to certain websites. I also tried to access the following sites with IE7 from my workstation with the same result: http://www.cabelas.com http://code.msdn.microsoft.com I get this error message when proxy is enabled: quote: Technical Information (for support personnel) * Error Code: 502 Proxy Error. The request is not supported. (50) * IP Address: 65.55.186.117 * Date: 11/17/2008 3:22:56 PM * Server: fw1.mycompany.local * Source: proxy I get this error message when proxy is disabled on the browser: quote: Technical Information (for support personnel) * Error Code: 500 Internal Server Error. The request is not supported. (50) * IP Address: 65.55.186.117 * Date: 11/17/2008 4:10:45 PM * Server: fw1.mycompany.local * Source: proxy Here is the ISA log when accessing the site: FOR: http://code.msdn.microsoft.com quote: Failed Connection Attempt FW1 11/17/2008 11:32:26 AM Log type: Web Proxy (Forward) Status: 50 The request is not supported. Rule: Employees Outbound Source: Internal ( 192.168.1.100:0) Destination: External (code.msdn.microsoft.com 65.55.186.117:80) Request: GET http://65.55.186.117/ Filter information: Req ID: 0666ece4 Protocol: http User: mycompany\joe_cool Additional information * Client agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727; .NET CLR 1.1.43
Date: Wed, 20 Aug 2008 08:24:13 -0400 http://www.ISAserver.org ------------------------------------------------------- The reason I ask is that shortly afterwards we started getting a bunch of people reporting that the MSN home page was all messed up. We found a computer that was experiencing this (not all of them were), and the page was showing up without graphics and everything was in one long column on the left side. Rebooting and having the firewall client re-detect the ISA server didn't help, but some of them seemed to correct themselves later. Apparently this is a cause for great concern, as they cannot do anything at all on the Internet if they cannot load the MSN home page. *grin* -----Original Message----- From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Harrison Sent: Tuesday, August 19, 2008 12:41 AM To: isalist@xxxxxxxxxxxxx Subject: [isalist] Re: 502 Proxy Error. The request is not supported. (50) http://www.ISAserver.org ------------------------------------------------------- That's a good Q - if I get time, I'll play with it. ..of course, you're welcome to also... -----Original Message----- From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Ball, Dan Sent: Monday, August 18, 2008 5:50 AM To: 'isalist@xxxxxxxxxxxxx' Subject: [isalist] Re: 502 Proxy Error. The request is not supported. (50) What would happen if you left the compression enabled and run this script? From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Jim Harrison Sent: Friday, August 15, 2008 9:40 AM To: isalist@xxxxxxxxxxxxx Subject: [isalist] Re: 502 Proxy Error. The request is not supported. (50) Kewl! ..now for the other folks in the audience... When compression is disabled, ISA will strip off the "Accept-encoding" header that the client sends. This is done to prevent the web site sending compressed responses because ISA can't apply HTTP body inspection to it. In this case (and several others, it seems), the web site sends compressed content anyway (it's a Sun server; waddayexpect?). Since ISA knows it can't process compressed HTTP bodies, it rejects it. Adding this value causes ISA to forward the "Accept-encoding" header and when the content i