Riya's solution is correct. Jayne Searl, as Riya says, you have to "create" the new value - it's not already there. Make sure you close Acrobat, then open the Registry Editor. When you're at the right location, open the Registry Editor's Edit menu, select New, select DWORD(32-bit) Value, then give it the name bReplaceOnKeyDown. Double click it to open and check that it has Value Data of 0 (it should have, by default), then click OK. FWIW, I'm using Acrobat 11, not DC so I did it for that key as well. Close the Registry Editor (important), then re-open Acrobat. Tabbing should work normally (at least it does for me, now).
Riya's solution is correct. Jayne Searl, as Riya says, you have to "create" the new value - it's not already there. Make sure you close Acrobat, then open the Registry Editor. When you're at the right location, open the Registry Editor's Edit menu, select New, select DWORD(32-bit) Value, then give it the name bReplaceOnKeyDown. Double click it to open and check that it has Value Data of 0 (it should have, by default), then click OK. FWIW, I'm using Acrobat 11, not DC so I did it for that key as well. Close the Registry Editor (important), then re-open Acrobat. Tabbing should work normally (at least it does for me, now).