So last week I had to clear out 1000′s of waiting workflows which had error codes in a CRM 2011 environment. I did this using an IronPython script and Determination my IronPython/CRM 2011 tool.
Its a pretty straight forward task, first deactivate the workflow (oddly, using an update call and not SetStateDynamic) and then delete the record. For those interested in performing such a task here is the full source.
import clr
clr.AddReference('Microsoft.Xrm.Sdk')
clr.AddReference('Microsoft.Xrm.Client')
import Microsoft.Xrm.Sdk
import Microsoft.Xrm.Client.Services
connection = Microsoft.Xrm.Client.CrmConnection.Parse(r'[connection string goes here]')
service = Microsoft.Xrm.Client.Services.OrganizationService(connection)
query = Microsoft.Xrm.Sdk.Query.QueryExpression('asyncoperation')
query.Criteria = Microsoft.Xrm.Sdk.Query.FilterExpression()
query.Criteria.AddCondition('errorcode', Microsoft.Xrm.Sdk.Query.ConditionOperator.NotNull)
query.Criteria.AddCondition('statuscode', Microsoft.Xrm.Sdk.Query.ConditionOperator.Equal, 10)
result = service.RetrieveMultiple(query)
for r in result.Entities:
print r.Id
r['statecode'] = Microsoft.Xrm.Sdk.OptionSetValue(3)
r['statuscode'] = Microsoft.Xrm.Sdk.OptionSetValue(32)
service.Update(r)
service.Delete('asyncoperation', r.Id)