Whenever a system hangs or freezes, the primary approach should be to check the disk usage in the Task Manager. In case high disk usage on the system is caused by the process associated with the OfficeC2Rclient.exe file, check this guide for the resolution.
What is OfficeC2Rclient.exe?
OfficeC2Rclient.exe is a file that is a part of the Microsoft Office Click To Run executable. It is triggered when the system is updating the Microsoft Office software. Ideally, it is a light process and shouldn’t cause any problem in the system, however, users have reported that the OfficeC2Rclient.exe process causes high CPU usage.
The cause behind the high CPU usage could be problematic Microsoft Office software.
Is OfficeC2Rclient.exe a virus?
The original OfficeC2Rclient.exe file is not a virus or malware but viruses and malware programmers usually name malicious software the same as genuine software products.
The original location of the OfficeC2Rclient.exe file is:
C:\Program Files\Common Files\Microsoft Shared\ClickToRun
To check the location of the file, right-click on it in the Task Manager and select Open File Location.
If the location of the file associated with the process in the discussion is different from the one mentioned above, I would suggest you run a malware scan on the system.
Microsoft Office Click-To-Run (OfficeC2Rclient.exe) High CPU usage
Usually, the OfficeC2Rclient.exe process shouldn’t cause high CPU usage, but if it does, consider the following solutions:
1] Repair the Microsoft Office client
To resolve the OfficeC2Rclient.exe high CPU usage problem, you could consider repairing the Microsoft Office client as follows:
Press Win+R to open the Run window. Type the command appwiz.cpl and hit Enter to open the Programs and Features window.
Right-click on the Microsoft Office software and select Change.
Then select the option to Repair Microsoft Office.
Restart the system once done.
2] Disable the Microsoft Office Click-To-Run Service
If the above-mentioned solution doesn’t work and handing and freezing of the system remains a problem, you could consider disabling the Microsoft Office Click-To-Run Service. However, you need to understand its importance before taking the step.
Alternatively, you could disable it only for a while and allow the service to run when the system is idle. The procedure to disable the Microsoft Office Click-To-Run Service is as follows:
Press Win+R to open the Run window and type the command services.msc. Hit Enter to open the Service Manager window.
Right-click on the Microsoft Office Click-To-Run Service and select Properties.
Change the Startup Type to Disabled and click on Apply and then on OK to save the setting.
This should resolve your problem.