Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Can't download files / compreg.dat missing

more options

I encountered an error when trying to download Docker Desktop for Windows 10 using Firefox 85.0.1. The error was: "C:\Users\<username>~1\AppData\Local\Temp\<some gibberish>.exe.part" could not be saved, because the source file could not be read." I have looked into it and found that I should delete the value in the network.http.accept-encoding setting from about:config. That didn't work so I tried another answer which was to delete compreg.dat from my profile folder. So according to Firefox, my profile folder is in AppData\Roaming\Mozilla\Firefox\Profiles\<profile> in which I could not find compreg.dat. I would please like some help as I cannot download files right now from any browser.

I encountered an error when trying to download Docker Desktop for Windows 10 using Firefox 85.0.1. The error was: "C:\Users\<username>~1\AppData\Local\Temp\<some gibberish>.exe.part" could not be saved, because the source file could not be read." I have looked into it and found that I should delete the value in the network.http.accept-encoding setting from about:config. That didn't work so I tried another answer which was to delete compreg.dat from my profile folder. So according to Firefox, my profile folder is in AppData\Roaming\Mozilla\Firefox\Profiles\<profile> in which I could not find compreg.dat. I would please like some help as I cannot download files right now from any browser.

All Replies (2)

more options

The suggestions you posted above were for older Firefox versions and are obsolete.

It is possible that (anti-virus) security software is causing the problem. Try to disable security software temporarily to see if that makes a difference.

more options

cor-el said

The suggestions you posted above were for older Firefox versions and are obsolete. It is possible that (anti-virus) security software is causing the problem. Try to disable security software temporarily to see if that makes a difference.

Ok. Thank you for the clarification. Now, however, I am now able to download again. Which is strange. Also, my anti-virus never caused problems for me in the past, so I wouldn't expect it to cause one now. Thanks anyway.