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TOSI CLIENT MINIMUM VERSION REQUIREMENT EFFECTIVE FROM JULY 6, 2026.

Starting July 6, 2026, Tosi Client version 4.4.1 or higher will be required on desktop platforms. Older versions must be updated to continue using the service.

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If you received a message of: “Too old client” and/or experienced a service interruption, please read this knowledgebase article to get back up and running in minutes.

Technical Materials

Get access to specific Tosi datasheets, manuals,

software releases and other technical guides, visit Knowlege Base.

Technical Support

All direct customers and partners can access services

and log support tickets through our Service Portal.

Office Hours

US: Monday - Friday: 9:00 AM - 5:00 PM (CST)

Europe: Monday - Friday: 8:00 AM - 5:00 PM (EST)

FINLAND

Global Headquarters:

Elektroniikkatie 2 A, 7th floor 90590 Oulu

Finland

ESPOO OFFICE

Keilaranta 15 b
02150 Espoo

Finland

TAMPERE OFFICE

c/o Tulli Business Park
Åkerlundinkatu 11
33100 Tampere

Finland

UNITED STATES

US Headquarters:
1212 Corporate Drive Suite 170

Irving, Texas 75038

GERMANY

Neue Mainzer Straße 84
60311 Frankfurt am Main

SWEDEN

Postbox 160
Skeppsgatan 19
211 11 Malmö

Sweden

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Technical Materials

Technical Support

Office Hours

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The fastest way to get your OT network and physical infrastructure connected, protected, and under control from any location