Manufacturer support (supply of security updates) for MS Office 2013 ends on April 11, 2023. MS Office 2013 is therefore no longer suitable for official use after April 11, 2023. Updates are available through the MS national contract.
On systems in the URZ administration service W10SELFADM, the update in March 2023 will be largely automatic. Independently administered systems must be updated by the responsible administrators before the support expires.
Further details can be found on the internal information page on the replacement of MS Office 2013 at Chemnitz University of Technology.