Is csrss.exe a malware

Question

When I opened my pc and done my usual activity there's a notification that says that do I want to allow a program to make changes to my computer from an unknown publisher.The program name was csrss.exe ,the publisher is unknown, and the program location is C:\Program Data\csrss.exe  .Please help me also to remove the program if csrss.exe is a malware

Answer 1

Window Defender

Answer 2

1. When (exact date, preferably) did you upgrade to Win10?
2. Was the upgrade offered & installed via Windows Update or did you choose to upgrade manually via the Media Creation Tool?

3a. When (exact date) did you do the "reset?"

3b. Not that it matters in the grand scheme of things but may I ask why you choose to go back to Windows 8.1?

4. Did you do a Reset or did you rollback to Windows 8.1?

• How to...Reset a Windows 8(.1) computer

http://www.eightforums.com/tutorials/18052-refresh-reset-windows-8-without-installation-disk.html

• How to rollback to a previous version of Windows from Windows 10

http://www.tenforums.com/tutorials/4097-windows-10-go-back-previous-windows.html

5. Have you ever run the Norton Removal Tool and/or the McAfee Consumer Products Removal Tool since you purchased the computer?

• Fact: Norton and McAfee applications are notorious for not uninstalling (or upgrading) cleanly. The "leftovers" may be your troublemaker here.

6. Are you telling us that KB3154070, KB3156019, KB3153704, KB3123862 and KB3035583 are listed in Installed Updates (not Update History) but...

KB3156013, KB3156019, KB3155178, KB3156059, KB3153171, KB3153199, KB3156017, KB3142030, KB3155784, KB3138615, KB2976978 nor KB3044374 are NOT listed?

7. Does the second line of text in IE11's Help | About tab read Update Versions: 11.0.31 (KB3154070) ?
8. Is Google Chrome version 51 (or higher) installed?

Answer 3

PA Bear MS MVP,my answers are:

1a. 6/22/15

1b. It came with preinstalled windows 8

1c. Toshiba

1d. yes

1e. before I reset it

2.   5/25/16

3a. 1.221.817.0

3b. 5/28/16 

3c. It does it's normal work

4.   none

5a. yes

5b. yes

6a. KB3154070,KB3156019 and KB3153704

6b. KB 3123862 and KB 3035583

7a. 11.09600.18321

7b. only Google Chrome

8.   yes
9.   no

Answer 4

Assuming Win8.1 64-bit...

We'll need to do some "digging" here. Please answer each of the following [admittedly tedious] diagnostic questions in a correspondingly-numbered list in your very next reply, preferably without quoting this post:

1a. When (approx. date) did you purchase the computer?

1b. Did the computer come with Win8 (or Win8.1) preinstalled, did you do a clean install of Win8 (or Win8.1), or did you upgrade a (e.g., Win7) computer to Win8?

1c. Who manufactured the computer (e.g., Dell; HP; Lenovo; Acer)? 

1d. Have you ever done a Refresh or a Reset?

1e. Has Windows 10 ever been installed?

2. When (exact date) did the notification concerning CSRSS.EXE first start?

3a. What Definitions versions are currently displayed in Defender's Update tab?

3b. What Definitions last updated date?

3c. What happens when you click on the UPDATE button on that tab?

4. What third-party anti-malware applications (i.e., not Windows Defender!) are installed, if any?  What third-party firewall, if any?

5a. Has a Norton application or a McAfee application EVER been installed on the computer since you bought it?

5b. Did a Norton free-trial or a McAfee free-trial [pick one] come preinstalled on the computer when you bought it? (Doesn't matter if you never used or Activated it.)

6a. Speaking of tedious => Is KB3154070, KB3156013, KB3156016, KB3156019, KB3155178, KB3156059, KB3153171, KB3153704, KB3153199, KB3156017, KB3142030, and/or KB3155784 listed in Installed Updates (not Update History)? [1]

6b. How about KB3138615, KB3123862, KB3035583, KB2976978 and/or KB3044374?

7a. What Update Version & KB number are displayed in the second line of text in IE11's Help | About [Alt+H+A] tab; e.g., Update Version: 11.0.54 (KB1231231) ?

7b. Is Firefox version 46.0.1 (or higher) and/or Google Chrome version 51 (or higher) or any other alternate browser installed?

8. Is Adobe Flash Player v21.0.0.242 installed? TEST HERE USING INTERNET EXPLORER ONLY! => http://www.adobe.com/software/flash/about/ 
9. Are you in the habit of using "Registry cleaners" (e.g., Registry Mechanic; System Mechanic; RegCure; RegClean Pro; Advanced SystemCare; Total System Care; Glary Utilities; Registry Booster; McAfee QuickClean; AVG Quick Clean; AVG PC TuneUp; Norton Registry Cleaner; Norton PC Tuneup; PCTools Optimiser; SpeedUpMyPC; FixMyPC; PC Doctor; TuneUp Utilities; WinMaximizer; WinSweeper; Comodo System Cleaner; Advanced System Optimizer; CCleaner Registry Cleaner component)?

====================================================

[1] Control Panel | Programs and Features | View installed updates (in left-hand menu)

Answer 5

And your current anti-virus/anti-malware application would be...?