Hi,
1) Have you made any recent changes prior to this issue?
2) What kind of browser are you using (Internet Explorer, Firefox, chrome etc…)?
3) What is the make and model of the printer?
Follow the below mentioned steps which may help you in fixing the issue.
a) Click Start
b) Right click on Computer, and select Properties.
c) Click on Advanced System Settings, click the Advanced Tab
d) In the Performance section, click Settings
e) Select the "Data Execution Protection" tab, and then click the 'Turn on DEP for all programs and services except those I select' option.
**f)**Click the Add button, and then browse to C:\Windows\System32\dllhost.exe
g) Click open, click OK on the warning message.
**h)**Click Apply/OK.
Check if the issue still persists.