Hi Md Samiul,
I can understand the inconvenience caused to you. I will certainly help you with this issue.
I understand you are not able to install the FIFA 2015 game. These errors are often not regarding the unarc.dll itself, but that it is unable to extract the current archive for different reasons;
No space left on drive for unpacking
Corrupted archive
No permission to write to where the archive is being unpacked.
not enough memory.
Follow the method below and check.
Method 1:Run Memory Diagnostic Tool
The memory Diagnostic tool helps you to identify if any problems found due to hardware failure Such as RAM, Motherboard and other circuit and it is done by running set of tests.
Follow the steps:
- Press Windows + R key on the keyboard.
- Go to Control Panel.
- Select the System and Security in the Control Panel.
- Open the Administrator Tool, it is the last option under System and Security
- Now you can see the option to check the memory errors and click the Restart now and check for problem option, before that saved any unsaved work running your PC.
- Once you select to restart, the windows memory diagnostic toolstarts checking and restarts automatically displaying the result.
If the issue persists, follow method 2.
Method 2:
Follow the steps in the given Microsoft help article:
**Improve performance by optimizing your hard drive**
Important: Data available on bad sectors might be lost when chkdsk tries to repair your hard disc.
**Ways to improve your PC's performance**
If the issue persists, follow method 3.
Method 3: Perform Clean Boot
Place the computer in clean boot and try to install the game.
Placing your system in Clean Boot state helps in identifying if any third party applications or startup items are causing the issue. You need to follow the steps from the article mentioned below to perform a Clean Boot
How to perform a clean boot in Windows
Note: Refer "How to reset the computer to start normally after clean boot troubleshooting" to reset the computer to start as normal after troubleshooting.
Please post back with the results and the information asked, We will be glad to assist you further.
____________________
Thanks & Regards,
Isha Soni