Product:
Planning Analytics 2.0.9.19 TM1 Perspective

Microsoft® Excel® for Microsoft 365 MSO (Version 2308 Build 16.0.16731.20542) 64-bit

Issue:

After installing a new TM1 Perspective, you get a message when you start excel:

Microsoft Office has identified a potential security concern. The digital signature is valid, but the signature is from a publisher whom you have not yet chosen to trust.

Solution:

Press “Trust all from Publisher” and TM1 perspective will work in your excel installation.

 

More information:

https://www.ibm.com/support/pages/opening-tm1-perspectives-generates-digital-signature-message