This chapter studies how Norges Bank came to play a central, technical role in maintaining and defending a stable krone exchange rate during the years 1946–86. This role was reflected in how the bank advised on the basis of a loyal position to the fixed krone exchange rate regime and to binding international exchange rate cooperation. In 1978, Norway backed out of the European fixed exchange rate cooperation, and during 1976–86, the krone was devalued ten times. Even though Norges Bank officially came to contribute to both recommending and carrying out this policy, the policy defied the strong ideals and viewpoints of the organization. The exchange rate policy, and the problems it led to in relation to the central bank, caused the government, in the first half of the 1980s, to push Norges Bank completely aside when it came to the shaping of Norwegian exchange rate policy. Nevertheless, much of the policy was still shaped inside the walls of the institution.