What's wrong with my Keil v5 compiler that target is sometimes gets created and sometimes not?

While I click on rebuild all targets, it gives following errors

1. compiling stm32f1xx_hal_tim.c...
"no source": Error: command-line: #564: cannot open embedded assembler output file "C:\Users\amit\AppData\Local\Temp\p82c-2": No such file or directory

2.compiling stm32f1xx_hal.c...
"no source": Error: command-line: #564: cannot open embedded assembler output file "C:\Users\amit\AppData\Local\Temp\p11ac-2": No such file or directory

3. compiling stm32f1xx_hal_cortex.c...
"no source": Error: command-line: #564: cannot open embedded assembler output file "C:\Users\amit\AppData\Local\Temp\p838-2": No such file or directory

4. compiling stm32f1xx_hal_flash.c...
..\Drivers\CMSIS\Include\cmsis_armcc.h(592): error: A1620E: Error writing to file 'C:\Users\amit\AppData\Local\Temp\pcd0-3': Permission denied

5. compiling stm32f1xx_hal_flash_ex.c...
..\Drivers\CMSIS\Include\cmsis_armcc.h(592): error: A1620E: Error writing to file 'C:\Users\amit\AppData\Local\Temp\p110c-3': Permission denied

What is this for?

1. compiling stm32f1xx_hal_tim.c...
"no source": Error: command-line: #564: cannot open embedded assembler output file
"C:\Users\amit\AppData\Local\Temp\p82c-2": No such file or directory

Who is amit ?

Do you have access to their user directory ?

We are friends and working on his laptop. Thus is not an issue. Problem may be not creation / access to respective temp folders, unable to write to folders, Permission denied etc inspite of accessing keil as administrator

I am getting mainly 2 types of errors
1. error :command line:#564:cannot open embedded assembler output file'<filename>':no such file or directory

2.error: A1620E: error writing to file <filename>:permission denied

can you help

I really don't understand what's going wrong whether its due to keil setup problem or stm32f103c8t6 package installation problem or with laptop's operating system i.e. Windows 7 ultimate32 bit setup problem. By the way in each i have reinstalled every setup twice including windows os too. But as it is saying that file is denied permission for writing at temp location,I think its might due to windows administrator access. But here also we have no guest account

So go right back to basics.

Open a command prompt, and see if you can manually create & write to a file in that location.

It should be obvious that, if this fails, then you have a fundamental Windows problem - nothing to do with Keil.

@Andrew Neil as per your suggestion I manually created sub-folders in temp folder using command promt. But very strange issue occured .

Let me explain u

When I click rebuild all target option ,it gives error saying no directory in temp folder like p1390-2,p858-3, pbb0-2,p128c-2. So here I created directories of above names using command promt.

Then when I click rebuild all target option again, it again give same error saying no directory in temp folder but this time with different directory names like p334-3, p55c-2, p14b4-2 and p1194-3. So again I created these directories too using command promt

and when I clicked rebuild all target option for 3rd time it gives same error saying no directory in temp folder but this time with another different directory names.

And this process is repeating again and again. So what should I do ?

Perhaps by setting the TMP/TEMP environment variable to something else (C:\TEMP), or putting the project is a regular directory, not a virtual directory.

My guess at this point is that you have some AV software interfering with the normal operation of the computer.

I had a similar error because I didn't have access to a folder in windows that contained those kind of directory names. I just clicked on the specific folder and hit continue to gain access. Not sure if it's related to being the administrator or not, but I no longer received the error.