Worried I copied and pasted something bad into cmd

[FireLegend]

Hello,

I was trying to reinstall my dll files and told to put in this command for %1 in (*.dll) do regsvr32 /s %1 do is this right I'm just worried this might've been unsafe or malicious in some certain way?

Any help would be greatly appreciated. 

P.S I have created a restore point just in case

[will0hlep]

2 minutes ago, FireLegend said:

Hello,

I was trying to reinstall my dll files and told to put in this command for %1 in (*.dll) do regsvr32 /s %1 do is this right I'm just worried this might've been unsafe or malicious in some certain way?

Any help would be greatly appreciated. 

P.S I have created a restore point just in case

So if i'm reading that code right it looks through the selected directory and "registers" all the DLLs it finds.

 

Looking at what "registers" means it dosn't seem like a malicious action (not a expert though).

 

What were you trying to do when you found this instruction?

[Murasaki]

Why are you trying to "reinstall" DLLs? Are you having issues running software?

[FireLegend]

1 minute ago, will0hlep said:

So if i'm reading that code right it looks through the selected directory and "registers" all the DLLs it finds.

 

Looking at what "registers" means it dosn't seem like a malicious action (not a expert though).

 

What were you trying to do when you found this instruction?

I was just trying to make sure I have all the dlls registered

[FireLegend]

Just now, Murasaki said:

Why are you trying to "reinstall" DLLs? Are you having issues running software?

crossdevice.streaming.source.dll
Came up on my device home screen and thought I needed to update the dll's

[Eigenvektor]

for %1 in (*.dll) do

This runs through all files in the current directory with the extension ".dll" and then executes the command that follows after it, passing the current file name to it in the variable %1

 

regsvr32 /s %1

This registers a DLL-file with the Windows registry (see here). Combined with the first part, it registers all .dll-files in the current directory.

 

Nothing malicious going on, though not sure it's going to fix whatever issue you have.

 

17 minutes ago, FireLegend said:

crossdevice.streaming.source.dll
Came up on my device home screen and thought I needed to update the dll's

What exactly does "came up on my device home screen" mean? Do you mean some error popup mentioning the file or …?

[Allan B]

The command registers all the DLLs in the folder it was run from. 

 

If you did this under "run" or an open command prompt it defaults to your profile (C:\users\firelegend for example) So probably did nothing as there normally aren't any DLLs in that folder.

If you ran it "as admin" you would have been in the c:\windows\system32 folder which would have registered all dlls in that folder.     Not ideal, but also probably not an issue as they are probably registered anyways.  

I would avoid running that in the future, it is very rare you need to manually register a dll, you should uninstall\reinstall a program if there are issues instead of manually trying to fix it.  

[FireLegend]

24 minutes ago, Allan B said:

The command registers all the DLLs in the folder it was run from. 

 

If you did this under "run" or an open command prompt it defaults to your profile (C:\users\firelegend for example) So probably did nothing as there normally aren't any DLLs in that folder.

If you ran it "as admin" you would have been in the c:\windows\system32 folder which would have registered all dlls in that folder.     Not ideal, but also probably not an issue as they are probably registered anyways.  

I would avoid running that in the future, it is very rare you need to manually register a dll, you should uninstall\reinstall a program if there are issues instead of manually trying to fix it.  

Ahh alright cheers!

[FireLegend]

28 minutes ago, Eigenvektor said:

for %1 in (*.dll) do

This runs through all files in the current directory with the extension ".dll" and then executes the command that follows after it, passing the current file name to it in the variable %1

 

regsvr32 /s %1

This registers a DLL-file with the Windows registry (see here). Combined with the first part, it registers all .dll-files in the current directory.

 

Nothing malicious going on, though not sure it's going to fix whatever issue you have.

 

What exactly does "came up on my device home screen" mean? Do you mean some error popup mentioning the file or …?

crossdevice.streaming.source.dll this came up on the screen looking like a .bat file but saved as a .dll file