Fix “Internet Explorer cannot display the webpage” for Oracle Enterprise Manager

If you cannot view Oracle Enterprise Manager in IE, but can in other browsers, chances are you’ve hit the MS IE ssl keysize patch.

A patch does exist for this (the problem is due to OEM using a 512 bit cert) but if you like you can frontend EM with Apache.

Put this inside the ssl VirtualHost in ssl.conf (on Redhat / Centos) and restart apache.

# Fix 512 bit oracle EM Cert & IE
SSLProxyEngine on
ProxyPass / connectiontimeout=5 timeout=30
ProxyPassReverse /

then just go to EM with

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