This SAP note can help you
2107965 - Issues in EPM Add-In / BPC for Excel after installing Microsoft updates
Resolution as per SAP note is as below since you dont have access to SAP notes.
- Microsoft has identified a known issue with these security updates and has provided a resolution in the following updates depending on your Microsoft Office version.
To resolve this issue, please install the following updates depending on your Office version: - If you continue to have issues after applying the March 10, 2015 updates, you will need to apply the following solutions on your computer: Microsoft Fix it 51029 / Microsoft Fix it 51031 specified in Microsoft KB 3025036.
- If you cannot install these updates, please follow the resolution in article KB 3025036.
- If you are in higher MS security patch and above MS ariticle solutions are not working in your system, please refer to SCN blog: https://scn.sap.com/thread/3668698 to try BPC_MS_update_fix.bat method.
- If the issue persists please contact Microsoft directly or utilize Microsoft resources to troubleshoot this issue further.
- Please review the Excel Support Team Blog for updates.
-Yogesh