Frederick IV decided to use the commitment to Henry XI in the religious war in France to be released from the guardianship of his brother.

Special Commissioners under imperial decree on 13 March 1576 that Frederick IV was the sole ruler of Liegnitz and one month later, on 17 April, he formally took possession of the government.

Henry XI made his official residence in Liegnitz, and Frederick IV was forced to retired to Haynau (Chojnów).

The situation changed in the following year, when the insubordination of Henry XI (who even refused to pay homage) led to the intervention of the imperial troops.

Legnica was given again to Frederick IV as a sole ruler, but was required (like the first time) to ensure all the needs of the family of Henry XI (who remained as an Imperial prisoner), paying them the sum of 30 talers for week.