Move PBI Desktop to different drive

Hi domtrump,

Power BI writes a lot of working data and temp files under your Windows User Profile, which is always on C: drive.

You can move the temp folders to D drive but Even after moving TEMP, Power BI internal cache for model processing will always write some files under your User Profile (C drive). It's baked into how Windows handles per-user app data.

I suggest you can create a batch file to remove the Temp Files and folders to save space on C drive, Below is the code 

@echo off
echo Clearing ONLY Power BI Desktop cache...

REM Delete Power BI Desktop cache
rmdir /s /q "%LocalAppData%\Microsoft\Power BI Desktop"

REM Recreate empty folder (optional but recommended)
mkdir "%LocalAppData%\Microsoft\Power BI Desktop"

echo Power BI Desktop cache cleared and folder reset!
pause

• Open Notepad

• Paste the script above

• Save as ➔ Clear_PowerBI_Cache.bat

• Save as type: All Files (*.*)

You can schedule this batch file to run after certain time or at the time when you login into your system by 

• Open Task Scheduler

• Create new task

• Trigger: Daily, at login, or every few hours

• Action: Run Clear_PBI_Cache.bat

Please note 

• This deletes cache, so Power BI Desktop will rebuild previews when opening datasets again (small delay).

• It won't harm your actual .pbix files or work — only temporary data gets deleted.

• If you have unsaved work open, save it first before running the script.

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Thanks for the info. Looks like that folder only has 46MB in it. Not sure what is taking up the rest of the 3 GB that got eaten up on my C drive. I will uninstall and use a different PC for Power BI dev. I appreciate your response and will keep this information for future reference.