Stocks are opening lower on Wall Street as a deal to rescue the Greek economy now looks much less certain than it had just one day ago.
The Dow Jones industrial average lost 50 points to 12,765 shortly after the opening bell. The Standard & Poor's 500 index was off seven at 1,372 and the Nasdaq composite gave up 24 points to 2,881.
In Europe, finance ministers postponed desperately needed aid for Greece. European stock markets fell and the borrowing costs of Italy and Spain, two other economically troubled countries, rose as investors sold their bonds.
Microsoft slumped 4 percent following the sudden departure of the head of its Windows division. The shakeup came just weeks after Microsoft launched Windows 8, which was met with mixed reviews.