More than a month after Symantec Corp. knocked out 50,000 Chinese PCs with a bad software update, the company is ready to offer compensation. But Chinese users eligible for the offer have to act fast; it’s only good for a couple of weeks.

Symantec’s problems in China began on May 18, when it released a bad software update that caused its Norton antivirus software to wrongly identify two system files in the Simplified Chinese version of Windows XP as malware and quarantine them. That mistake, which Symantec blamed on “an automated process,” left tens of thousands of PCs crippled and Internet bulletin boards full of angry posts.

Chinese users who lost data because of Symantec’s faulty update demanded compensation, and at least two lawsuits were filed against the company. But Symantec was slow to respond, saying earlier this month it was considering requests for compensation.

After five weeks, Symantec is ready to make amends. The company is offering affected Chinese consumers a 12-month Norton license extension and a copy of Norton Save & Restore 2.0. Corporate customers are being offered Symantec Ghost Solution Suite licenses, depending on the number of PCs affected. Symantec is not offering to extend Norton licenses for corporate customers affected by the bad update.

Symantec described its offer as “a gesture of our goodwill.”