Cs0016: failed to write the output file ***** invalid directory name

Early in the morning, the anti-virus software prompts a reminder to delete privacy records and clean up a pile of space. I usually ignore it. Today, by the way, I cleaned up and went wrong.

The Code submitted after work last night has a good program running. After cleaning up the system this morning, something went wrong,

The details are as follows:

Cs0016: the output file "C: \ WINDOWS \ Microsoft. NET \ framework \ v4.0.30319 \ temporary ASP. Net files \ lawplatform \ 82faea26 \ 902549ea \ app_global.asax.8nzb06gr.dll" cannot be written. "

I thought it was this directory because the anti-virus software has no user permission to clean up, and you have permission to view it. Delete the directory, restart IIS, and re-compile the code. The problem persists.

Baidu, the original is to clear the space, c: \ windows \ Temp File, not to clear the operation, but to delete the temp folder !!!

All right, create a temp folder and attach user permissions!

I won't tell you if you are a drug overlord!

Cs0016: failed to write the output file ***** invalid directory name