Hi @Vlado Sedlák ,
Welcome to Q&A forum!
To better analyze this issue, please provide the detailed version of Office, such as Office Professional Plus 2013 and Office Professional 2013.
- If you are using the retail version of Office, such as Office Home and Business 2013 or Office Professional 2013.
I would suggest you refer to the setps in the link provided by DSPatrick.
- If you are using the volume version of Office, such as Office Standard 2013 or Office Professional Plus 2013.
You may need to seek the help of the VLSC administrator, sign in Microsoft Volume Licensing Service Center to donwnload the Office installation package.
For more details, please refer to: Downloads FAQ.
Besides, here is an offcial article about deployment of Office, please check if it helps.
Deploy Office 2013 from a network installation point.
Any updates, please let us know.
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