Win7 cannot install Microsoft. Net framework 4. Solution steps:

1. Click Start - enter services.msc in the operation box and press enter;

2. Select windows update, right-click and select stop;

3. Click Start - enter CMD in the run box, select CMD, right-click and select run as administrator;

4. Call up the command window, enter net stop wuauserv, and press enter;

5. Click Start - enter% windir% in the operation box and press enter;

6. Find the software distribution folder and rename it sdold;

7. Click Start - enter services.msc in the operation box and press enter;

8. Select windows update again, right-click and select start. At this time, Microsoft. Net framework 4 can be installed normally.