I've been struggling with that issue for a couple days now.
I'm unable to connect to my Git project (stored in VisualStudio.com) from a specific computer (it works on my second PC). Whenever I try to Sync or Clone my repository, VS2017 asks for my user credentials (twice) and the I get the following error :
Error: cannot spawn askpass: No such file or directory Error encountered while cloning the remote repository: Git failed with a fatal error. could not read Username for 'https://.visualstudio.com': terminal prompts disabled
Can't remember if I changed anything that could've caused that...
It’s mainly caused by the credentials have been remembered by Credential Manager. You should remove the credentials for xxx.visualstudio.com which have been stored in Credential Manager.
Such as if the pc’s OS is windows, you can open Credential Manager -> Windows Credentials -> under Generic Credentials -> remove the credentials like git:https://xxx.visualstudio.com.
Then clone again, git will let you input the credential for the repo. After inputing the username(email address) and password which can access the VSTS account, the repo should be cloned successful.