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Tekla Tedds knowledge base articles

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Tekla Structural License Service 2026 Release Notes (V7.1)

Updates

Includes some minor updates and fixes

On-Premises - Sentinel RMS Licensing

Includes Sentinel RMS 10.1 which ensures that products are fully supported on Windows 11 when using on-premises Sentinel RMS licensing.

Supported operating systems

Only 64-bit operating systems are supported.

Tekla Structural License Service 2026 Release Notes (V7.0)

Updates

Includes some minor updates and fixes

On-Premises - Sentinel RMS Licensing

Includes Sentinel RMS 10.1 which ensures that products are fully supported on Windows 11 when using on-premises Sentinel RMS licensing.

Supported operating systems

Only 64-bit operating systems are supported.

Tekla Structural Design Suite 2026 Release notes

The Complete Structural, Analysis, Design and Calculation Suite: Tekla Structural Design Suite combines Tekla Tedds & Tekla Structural Designer delivering a single high-value easy-access subscription. The only subscription an engineer performing structural analysis and calculations will need.

ERR_CONNECTION_REFUSED when attempting to sign in to Tekla desktop software

Overview

We have identified a sign-in issue affecting some users of Tekla desktop software.
The issue is caused by one or more Windows 11 updates — specifically:

How to request to be added to your organization in the Online Services

Follow these steps to join your organization and complete your Trimble ID setup:

Note that if your Trimble Identity is already set up then you will be redirected to Step 5.

When I try to install Tekla Tedds and/or Tekla Structural Designer, the installation fails with an error message such as "Error 1638" or "Error 1603." What should I do?

Problem

You run the installation for Tekla Tedds and/or Tekla Structural Designer, but the installation fails and may give one of the error messages below:

I cannot calculate within Tedds - The error message "Failed to create Tedds Calculator" is displayed

Question

When opening or running a calculation command in Tedds or Tedds for Word, a "Failed to create Tedds Calculator" error occurs, preventing me from calculating. How can I resolve this?

Tekla Structural License Service 2025 Release Notes (V6.0)

Updates

Includes some minor updates and fixes

On-Premises - Sentinel RMS Licensing

Includes Sentinel RMS 10.1 which ensures that products are fully supported on Windows 11 when using on-premises Sentinel RMS licensing.

Supported operating systems

Only 64-bit operating systems are supported.

Tekla Structural Design Suite 2025 Release notes

The Complete Structural, Analysis, Design and Calculation Suite: Tekla Structural Design Suite combines Tekla Tedds & Tekla Structural Designer delivering a single high-value easy-access subscription. The only subscription an engineer performing structural analysis and calculations will need.

End of Sales of Tekla Maintenance Products for Perpetual License

1. What has been announced?

Trimble announced the end of sale of maintenance products for all perpetual license types of Tekla software.

2. Which products are affected by this change?

End of Sale is announced for the following maintenance products: