Of recent I came across this issue “App has been Blocked for your protection ” when trying to install printer drivers (HP LASERJET M1132 MFP) on my HP notebook 2000 laptop running an updated version or windows 10 Enterprise. I made a lot of research on the internet and came out with a clear solution that will be able to help you solve the error very fast without affecting your computer.

Note: This issue normally occurs after installing a new version of windows 10 or after upgrading your window to the current version.

Error App has Been Blocked for Your Protection

STEP 1:
Open the “RUN” program in windows by pressing win + R and then type “ regedit “  then hit “OK “  to launch the registry editor.

 

STEP 2:
While in the registry editor from the Left side panel expand the HKEY_LOCAL_MACHINE  >>> SOFTWARE  >>> MICROSOFT  as shown in illustration below

 

STEP 3:

From Microsoft Expand to  WINDOWS  >>>  CURRENT VERSION  

App has Been Blocked for Your Protection

 

STEP 4:

From CurrentVersion scroll down and expand POLICIES >>> then click on “System” directory. 
NOTE: Do not expand the system directory just click on it.

App has Been Blocked for Your Protection

 

STEP 5:
From the registry files under “System ”  directory double click on  “EnableLUA” File 

 App has Been Blocked for Your Protection

 

STEP 6:

And this will open a popup as shown below.

 App has Been Blocked for Your Protection

 

STEP 7:

Change the value data from 1 to 0 and then click on ok button

 App has Been Blocked for Your Protection

 

By Muganzi Martin