Applicability:

• Applies to:
  • Windows Managed Servers (virtual and dedicated) running Plesk
• Specifically does not apply to:
  • Windows Shared Hosting servers
  • Linux hosting servers of any type

Symptom: 

Depending on the browser, you may receive an error when clicking the MSSQL Web Admin link. 

• Chrome
  • 
• Firefox
  • 
• IE (Internet Explorer) 
  • ​Internet Explorer works properly, however you may not see the "Show Content" prompt to bypass the warning.  It's highlighted in the following image. Once you click it, an exception is set, and the control panel reloads.  Simply click the MSSQL Web Admin link again, and this time the page will load because the exception is logged. Your browser will retain that exception unless/until you clear browing history data. 
  • 

Resolution:

• Chrome
  • This is a bug in Chrome that affects any application that uses HTTPS/SSL in a frame and encounters a certificate mismatch.  Chrome development has yet to fix this bug.  You should use Internet Explorer or Firefox with IETab extension
  • UPDATE 05/16/2012: this appears fixed as tested in 19.0.1084.46 beta-m
• IE (Internet Explorer) 
  • Internet Explorer works properly, however you may not see the "Show Content" prompt to bypass the warning.  It's highlighted in the following image. Once you click it, an exception is set, and the control panel reloads.  Simply click the MSSQL Web Admin link again, and this time the page will load because the exception is logged. Your browser will retain that exception unless/until you clear browing history data. 
  • 
• Firefox
  • use Internet Explorer
  • Or, if you have IE installed on your system, you can installed the firefox Add-on called IE Tab Plus 2.0.0.0
    • Once installed, add your control panel url to IE Tab's "sites filter" which will make Firefox use IE Tab whenever you visit that URL (and IE tab will use IE to render the page).  So you're basically using IE inside of Firefox.   To add this entry to the "sites filter" setting, go into the add-on's options settings (under Firefox > add-ons > extensions > IE Tab Plus > options), and add the URL:
    •