OK, so I had this problem to where my Far Cry 4 wasn't saving so I checked around and I found out that it actually was saving but the game wasn't reading where the save was at. Here is how you fix that. FIRST OFF TRY RUNNING GAME AS ADMINISTRATOR FIRST!!!!!
The award-winning Far Cry franchise returns with its innovative open world gameplay, bringing together massive beasts, breathtaking environments,.
Go to your Far Cry 4 installed file usually C: / Program Files (x86) / Ubisoft / FarCry 4 2. Find the bin folder and click on the 'SaveGames' Folder 3.
Content on this site may contain or be subject to specific guidelines or limitations on use. Feig obid usb driver. Use of the information on this site may require a license from a third party, or a license from TI.
Copy the saves in the folder (Should be marked 1, 2, 3, and so forth) 4. Go to your documents and find your ubisoft folder (if not create one) 5. Create a folder inside that ubisoft folder 'Far Cry 4' 6.
Inside that folder make another one called 'SaveGames' 7. Paste the files you found in the bin SaveGames folder you copied earlier.
Load Far Cry 4 and enjoy. Not sure if this fixes all the save issues but it resolved mine. If your game didn't save at all then I have no idea and try the steps 4-8 and when it saves exit the game and see if it saved.:) You're welcome.