Exchange 2010 Owa Error 400
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Highly Available (HA) Microsoft Exchange 2013 setup was designed and installed by Dave Stork. I have installed various cumulative updates on this setup and almost everything went without a hitch. Since then, I moved
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on. The issue Last week our IT deparment had a big problem with
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Outlook Web App (OWA) on Microsoft Exchange 2013. It was not working anymore and it was inaccessible for all our 500+ employees. However, exchange 2010 owa not working after update all other services kept on working normally (ActiveSync, Outlook Anywhere, etc.). Since I’m not managing this Microsoft Exchange 2013 environment anymore, I wasn’t fully aware of this problem, until the IT Department asked me to https://support.microsoft.com/en-us/kb/2971274 take a look at it, in the hope that I could fix it. In the end, we managed to fix this problem without too many complications. I have to thank my colleague and partner in crime, Chris Petit (@christiaanpetit) for his insights and tips. He was a great help during this ordeal at work. The problem Our IT department changed the authentication option on the ECP virtual directory https://dirteam.com/sergio/2014/01/21/bad-request-http-400-error-in-exchange-2013-owaecp/ and suddenly Outlook web access was not working anymore. All our employees working in the field use Outlook Web App to communicate. You can just imagine how frustrating this can be for customers. On smartphone devices, colleagues could see the nice Outlook Web App login page of Microsoft Exchange 2013, only to find out that it doesn’t work. After providing their (correct) credentials, they received this error: “Outlook web app didn’t initialize. If the problem continues please contact your helpdesk. Couldn’t find a base theme (folder name=base)” In the eventviewer we saw a lot of these error messages: With this informationin mind, we concluded that some web technology and perhaps some webservice was at fault. The solution The solution to this problem is a neat one. On the internet we read blogposts telling us that we needed to recreate the Outlook Web App (OWA) and Exchange Control Panel (ECP) virtual directories. We did do this, following the instructions from this blogpost: http://exchangeonline.in/re-create-owa-virtual-directory-exchange-2013/ But… recreating the virtual directories did not solve anything for us. Then, my colleague Chris Petit (@christiaanpetit), pointed me to this blogpost: http://www.faultserver.com/q/answers-exchange-server-2010-owa-couldnt-find-a-base-theme-268697.html At first, I was sceptical about this solution because it was tested for Microsoft Exchange 2010 only. Since there is little known about Exchange 2013, I gave this solution a shot and, luckily, it w
2013SBS2008/2011Server 2003Server 2008Server 2012Windows VistaWindows 7Windows 8Windows 10Windows XPTerminal ServicesVMwareVeeam HomeMicrosoft Exchange 2010 Exchange 2010 ECP error 400 Exchange 2010 ECP error 400 Written by Allen White on. Posted in Exchange 2010, General IT Problem When you http://www.techieshelp.com/exchange-2010-ecp-error-400/ try to access the ECP in exchange 2010, in your http://www.tecfused.com/2013/09/exchange-2013-ecp-double-login-error-400/ web browser you see ERROR 400 BAD REQUEST. See the image below. Ive seen this on new installs of exchange 2010. error 400 bad request - Exchange 201 ECP IT Solution This is down to the security on the OWA exchange 2010 virtual directory and the ECP not matching, the quickes way to fix this is to regenerate both virtual directories. Use the commands below to do so. Open the exchange managment shell and enter the below. Remove-OwaVirtualDirectory -Identity "owa (default Web site)" Then Remove-ECPVirtualDirectory -Identity "ecp (default Web site)" Then New-OwaVirtualDirectory Then exchange 2010 owa New-ECPVirtualDirectory then Reset IIS. This will have recreated both OWA and ECP virtual directories, you will be able to login to the ECP now. If you want to learn more about powershell consider this book.   Allen WhiteAllen is a Consultant for ITPS in the North East of England and holds the following accreditations. MCSA, MCSE, MCTS, MCITP, CCA, CCSP, VCP 4,5 and HP ASE, AIS - Network Infrastructure. ITPS provides strategic IT consultancy, implementation, data centre provision and unified communications, as well as support services and workspace and disaster recovery. If you require a consultation then please contact me via the contacts section or direct on 07931222991, add me on linkedin. https://uk.linkedin.com/in/allenwhiteconsultant0001 Tags: ECP, OWA Comments (1) Frank May 23, 2011 at 8:10 am | # Also possible that you disabled the forms based authentication on the owa directory and didn't disable it on the ecp directory… Reply
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