Unknown error: cannot create temp dir for user data dir in chrome driver

I was facing the same issue with chrome drivers. Following are the cases that I found could lead to this issue:

• Missing TEMP or TMP environment variables
• TEMP or TMP is mapped not to local NTFS drive
• Permission issue (if you are using user other than the logged in user)
• TEMP or TMP invalid path

In my case TEMP was mapped to C:\Users\MyUser\AppData\Local\Temp\MyFolder. So when the Temp folder got cleared, MyFolder folder also got deleted and chromedriver threw "Unknown error: cannot create temp dir for user data dir" . By creating a new folder with name "MyFolder" in Temp folder fixed my issue.

TEMP and TMP path can be verified at

My Computer -> Properties -> Advanced System settings -> Environment Variables -> Variables used for < your user >

Or else you can check it by entering "%temp%" in "Run" window.

Its better to check path using both ways because I have seen some cases where temp path set in environment variable and path of folder that opens on executing %temp% command via Run were different.

Hope it helps.

I met same issue and solved it now. I checked the path of TEMP dirctory according to many online suggestions.

• Check Environment Variable
• Run command echo %temp%

The important thing I found that sometimes the paths are different in above two methods.(I never edited this path before checking it) In my case:

• Check Environment Variable C:\Users\Administrator\AppData\Local\Temp
• Run command echo %temp% C:\Users\Administrator\AppData\Local\Temp\4

So I checked the Temp directory and there wasn't 4 folder. I created 4 folder manually in the Temp directory and the issue was solved. Of course, this is the case of Administrator. I haven't checked the case of user, but hope it helpful for the case too.

Quick fix: running IntelliJ as admin solved my problem!