The University was forced to stop the exams after the students vowed they would not step into exam halls unless their issues had been addressed.
Recommended articles
The students on Monday, November 20, skipped their semester final exams, and mounted pressure on the vice-chancellor Levi Nyagura to revoke the award or step down with immediate effect.
The students had also said they would not write exams unless President Robert Mugabe leaves office.
Mugabe tendered his resignation letter on Tuesday after 37 years in power.
His resignation followed series of pressure from various quarters in the country, including the military and the political party the rejected president used to lead.
Grace's thesis has never been made public and, according to university records, she graduated three months after registration for a programme which usually takes three years to complete.
Her husband is the chancellor of all 10 state universities.
Despite being under house arrest, Mugabe presided over the Zimbabwe Open University graduation ceremony in Hatcliffe, Harare, last Friday.