Originally Posted by lfcobra
I get the same error message when trying to install MSVC runtime except it identifies the error as "Error 1935". So obviously this is not a calibre issue. Hopefully I'll get something figured out as I'd really like to use this software.
Try disabling your Anti-Virus software long enough to install MSVC.
Caution: Use only a version you downloaded from Microsoft (or other KNOWN source), your safety net is on break.
Re-enable the A/V soonest.