Helen Chiang, who spent 21 years at Microsoft, departed Xbox less than two weeks after being promoted to chief operating officer in July, the former executive said, raising 'serious concerns' about how accountability standards were applied in her case.

In a LinkedIn post titled 'clarity is kindness' -- a reference to Xbox CEO Asha Sharma's Wall Street Journal profile -- Chiang stated she does not dispute her departure but has 'serious concerns' about the consistency of the accountability standards applied. She denied rumors she was terminated for policy violations, calling that characterization 'not accurate.' Chiang also denied she was leaking confidential information or leaving to join a competitor, and rejected allegations of discrimination, bullying, harassment, insider trading, embezzlement or other fraudulent activity.

Multiple Xbox employees described Chiang as highly respected with high integrity. Her departure was initially reported with a short memo from Xbox leadership. Chiang said 'This is not how I ever imagined my story here would end. And it is not the whole story.'

Microsoft did not respond to requests for comment on Chiang's post.