The advice came after Microsoft released a monster patch load repairing 28 critical and important vulnerabilities on its regularly scheduled "Patch Tuesday," which falls on the second Tuesday of every month.
The flaw allows online criminals take over a computer merely by tricking users into visiting Web sites tainted with malicious programming code.
According to Antivirus software maker Trend Micro, as many as 10,000 sites have been compromised so far since last week to exploit the flaw.
Alternative browsers such as Firefox and Google Chrome can be downloaded for free, and have not shown the same vulnerability, though others do exist.