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FAQ 002274 EN

1 December 2017

Markus Baumgärtel Import / Export & BIM RFEM RSTAB

After the export to Excel, I receive the error message “Microsoft Excel is not installed on this computer” and the export function is greyed out. What might be the reason for this?


In this case, the COM interface of Excel is not registered correctly. Reasons for this may be the following:

- “Registry cleaners” (for example CCleaner...) destroyed the registration
- The anti-virus software blocks the export
- Missing user rights

To re-register the COM server of Excel, start the DLInstaller.exe by right-clicking the function --> “Run as administrator”. Then switch to the tab “Diagnostics” and start the process (see image 2).
Start RFEM/RSTAB to test the export/import again.


DLInstaller.exe (195 kB)


Excel not installed warning No. 934


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RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
3,540.00 USD
RSTAB Main Program
RSTAB 8.xx

Main Program

The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions

Price of First License
2,550.00 USD