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rnorm597_139338
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Sep 21, 2017

Some clients receive a blank page during login from ASM

Were using ASM v13 and we have a couple of clients getting a blank page during login to our site. A brief description of error is below. thanks

 

FWIW, I ran couple tests today.. I have two machines here at home where it fails and one were it works fine. Both running the same version of Edge.

 

I ran a Fiddler trace on both systems and the one that works, I can see a TSPD request that follows the o/login.aspx page. There’s apparently a script block in there that pulls in:

 

When it works, this request follows the login and then I see the 302 (redirect) and things work. On the machines that fail, it never makes is past the o/login.aspx page (I never see the TSPD request).

 

2 Replies

  • Can you check if the clients which are failing have JavaScript enabled? Do you have any of the bot detection, web scraping, CSRF, CAPTCHA, or any other DoS mitigations enabled?

     

  • In v13, you can control allowed and disallowed bots in the DoS profile. You might be able to create a custom bot signature rule to allow the Edge browser.