Please capitalize where necessary: fix corrupt pst or ost files created using different microsoft outlook versions.
A: Fix corrupt PST or OST files created using different Microsoft Outlook versions.

Please capitalize where necessary: the active substance of flusenil is fluconazole.
A: The active substance of Flusenil is Fluconazole.

Please capitalize where necessary: morning temperatures will be around 10 c. during the day they will reach a maximum of 15 c. low temperatures at night will be around 5c. northerly winds are weak.
A: Morning temperatures will be around 10 C. During the day they will reach a maximum of 15 C. Low temperatures at night will be around 5C. Northerly winds are weak.

Please capitalize where necessary: knuth has already made a timely and great contribution.
A:
Knuth has already made a timely and great contribution.