Open a Case at Technical Support and ask for fix
T6FX007 for Client Automation 14.0 SP2
OR
use this workaround
1- Edit file CIC_offline_Export.xml with wordpad or another text editor.
2- Research all strings checksum= and make it lowercase if it is in uppercase.
For example in file CIC_offline_Export.xml for this checksum :
<offline_patch name="project2013-kb4461489-fullfile-x86-glb"
uuid="1e431ae8-fdb5-42b2-9a80-4d11c252a14f" vendor="Microsoft Corporation">
<offline_download_file
checksum="CC469850BE15834FB259C76F475B0C33"
Replace CC469850BE15834FB259C76F475B0C33 by cc469850be15834fb259c76f475b0c33
Do the same for all checksums in uppercase.
3- Once file updated, do again the importation of patches of file CIC_offline_Export.xml