What is YTSingleInstance.dll?
YTSingleInstance.dll is part of Yahoo! Single Instance for Mail and developed by Yahoo! Inc according to the YTSingleInstance.dll version information.
YTSingleInstance.dll's description is "Yahoo! Single Instance for Mail"
YTSingleInstance.dll is digitally signed by Yahoo! Inc..
YTSingleInstance.dll is usually located in the 'C:\Program Files\Yahoo!\Companion\Installs\cpn\' folder.
None of the anti-virus scanners at VirusTotal reports anything malicious about YTSingleInstance.dll.
If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.
Vendor and version information [?]
The following is the available information on YTSingleInstance.dll:
| Property | Value |
|---|---|
| Product name | Yahoo! Single Instance for Mail |
| Company name | Yahoo! Inc |
| File description | Yahoo! Single Instance for Mail |
| Internal name | YTSingleInstance.dll |
| Original filename | YTSingleInstance.dll |
| Legal copyright | (c) Yahoo! Inc. All rights reserved. |
| Product version | 7, 2, 2, 0 |
| File version | 2008, 7, 28, 01 |
Here's a screenshot of the file properties when displayed by Windows Explorer:
| Product name | Yahoo! Single Instance for Mail |
| Company name | Yahoo! Inc |
| File description | Yahoo! Single Instance for Mail |
| Internal name | YTSingleInstance.dll |
| Original filename | YTSingleInstance.dll |
| Legal copyright | (c) Yahoo! Inc. All rights reserved. |
| Product version | 7, 2, 2, 0 |
| File version | 2008, 7, 28, 01 |
Digital signatures [?]
YTSingleInstance.dll has a valid digital signature.
| Property | Value |
|---|---|
| Signer name | Yahoo! Inc. |
| Certificate issuer name | VeriSign Class 3 Code Signing 2004 CA |
| Certificate serial number | 5a2d0e95592b515a5cf3f5c5d59c88b7 |
VirusTotal report
None of the 50 anti-virus programs at VirusTotal detected the YTSingleInstance.dll file.
Folder name variants
YTSingleInstance.dll may also be located in other folders than C:\Program Files\Yahoo!\Companion\Installs\cpn\. The most common variants are listed below:
- C:\Program Files (x86)\Yahoo!\Companion\Installs\cpn\
- C:\PROGRA~1\Yahoo!\Companion\Installs\cpn\
- C:\Program Files\Yahoo!\Companion\Installs\cpn0\
- C:\Program Files (x86)\Yahoo!\Companion\Installs\cpn1\
- C:\PROGRA~1\Yahoo!\Companion\Installs\cpn0\
- C:\Program Files\Yahoo!\Companion\Installs\cpn2\
- C:\Archivos de programa\Yahoo!\Companion\Installs\cpn\
- C:\Programmi\Yahoo!\Companion\Installs\cpn\
- C:\PROGRA~1\Yahoo!\Companion\Installs\cpn1\
- C:\PROGRA~1\Yahoo!\Companion\Installs\cpn4\
- C:\Program Files (x86)\Yahoo!\Companion\Installs\cpn0\
- D:\Program Files\Yahoo!\Companion\Installs\cpn\
Hashes [?]
| Property | Value |
|---|---|
| MD5 | f64c4241fe5e519f62c47c361dc671d7 |
| SHA256 | 2602f6939a595b54d69f9fe023e044a085a9554f0829a9a9991999c6130b1aa3 |
What will you do with the file?
To help other users, please let us know what you will do with the file:
What did other users do?
The poll result listed below shows what users chose to do with the file. 29% have voted for removal. Based on votes from 35 users.
NOTE: Please do not use this poll as the only source of input to determine what you will do with the file.
Malware or legitimate?
If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.
And now some shameless self promotion ;)
Hi, my name is Roger Karlsson. I've been running this website since 2006. I want to let you know about the FreeFixer program. FreeFixer is a freeware tool that analyzes your system and let you manually identify unwanted programs. Once you've identified some malware files, FreeFixer is pretty good at removing them. You can download FreeFixer here. It runs on Windows 2000/XP/2003/2008/2016/2019/Vista/7/8/8.1/10. Supports both 32- and 64-bit Windows.
If you have questions, feedback on FreeFixer or the freefixer.com website, need help analyzing FreeFixer's scan result or just want to say hello, please contact me. You can find my email address at the contact page.
Comments
Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.
I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.
alex writes