Hi Suhaas
I hope you are keeping well and many thanks for using the SAP Discussion Forums 
.
Based upon your description you mentioned the following:
- Fiori and AJAX framework pages in NW 7.4 SPS12 -> Login -> Blank Display.
Ok firstly have you checked in various browsers types?
- Kindly check if compatibility mode is enabled/disabled?
- SAP Fiori Integration with SAP Enterprise Portal - SAP Note 2031108
- Known issue note FLP on EP - SAP Note 2008931
Kindly update me as per your findings.
Kind Regards
Troy Cronin - Enteprise Portal Support Engineer
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