Distinctcount crashing my PC

[broodstar]

Dear Dax users I need help or I go crazy,

I have two tables in data model - Data, Customers 

Data
Customer	Month	Product	KR
1019593	2020/06	Product A	10
1019593	2020/06	PRoduct B	2
...	...	...	...

Customers
Customer	Selected month	Countrows	Distinct count month
1019593	2020/06	2	crashing PC
...	...	...	...

I want to know number of months in which any product was sold. I cannot use countrows, becuase it returns 2 as there are two products sold in one month.

= CALCULATE

(

  Countrows(Data);

   FILTER(Data; Data[Customer] = Customers[Customer]);

   FILTER(Data; Data[Month] = Customers[Selected month])

)

I guess I need to use distinct count, but if I put the formula below, the pc crashes. Do you where could be the problem? Please?

= CALCULATE

(

  DISTINCTCOUNT(Data[Month]);

   FILTER(Data; Data[Customer] = Customers[Customer]);

   FILTER(Data; Data[Month] = Customers[Selected month])

)

[broodstar]

Dear Dax users I need help or I go crazy,

I have two tables in data model - Data, Customers 

Data
Customer	Month	Product	KR
1019593	2020/06	Product A	10
1019593	2020/06	PRoduct B	2
...	...	...	...

Customers
Customer	Selected month	Countrows	Distinct count month
1019593	2020/06	2	crashing PC
...	...	...	...

I want to know number of months in which any product was sold. I cannot use countrows, becuase it returns 2 as there are two products sold in one month.

= CALCULATE

(

  Countrows(Data);

   FILTER(Data; Data[Customer] = Customers[Customer]);

   FILTER(Data; Data[Month] = Customers[Selected month])

)

I guess I need to use distinct count, but if I put the formula below, the pc crashes. Do you where could be the problem? Please?

= CALCULATE

(

  DISTINCTCOUNT(Data[Month]);

   FILTER(Data; Data[Customer] = Customers[Customer]);

   FILTER(Data; Data[Month] = Customers[Selected month])

)

[kentyler]

Have you tried restarting your PC and reinstalling Power BI ? You might also try install DAX Studio...which will give you better insights about what queries are actually being run.