The fix comes less than a week after Redmond acknowledged vulnerability to decade-old encryption flaw.
Previously thought limited to Apple and Google browsers, the flaw leaves communications between affected users and websites open to interception.
Apple and Google working on fixes for the decade-old flaw, which researchers blamed on an abandoned US policy on encryption.
The vulnerability, which Verizon has already fixed, would have let anyone to tap into a Verizon email account.
Data loss security woes
Insecam streams home video footage to illuminate weak security protocols.
The highly anticipated Vizio P series is among the cheapest 4K TVs available and delivers a very good picture, but flawed video processing prevents it from achieving its full potential.
Apple will switch to the TLS encryption standard after disclosure of vulnerability that could expose encrypted data.
Three Google security engineers uncover a major vulnerability in the older -- but still supported -- Web encryption standard SSL 3.0. Experts say fixing it is impossible and upgrading will be difficult.
Monthly security update addresses two dozen vulnerabilities, including one being exploited as part of the "Sandworm" cyberattack.