From The Document Foundation Wiki
- Cases where Windows Update service is disabled using some advanced methods.
- For some older LibreOffice versions, cases when MS UCRT is 'partially' present on system (improperly installed by another application) - this case is associated with
api-ms-win-crt-string-l1-1-0.dll missing
message. This is the case for Avast antivirus pre-installed. In later LibreOffice versions, we decided to not check for the component presence for this reason, and now the installer tries to install the component unconditionally (repairing broken installation cases).