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SMLProxy64.exe is the internal/original filename documented for a 64-bit helper used by 360 software, also identified in one published sample as GRouter86.exe. That does not make every file with this name safe. Check the complete path, digital signature, SHA-256 hash, file version, and the parent program before allowing, deleting, or restoring it. The reference sample is version 2.0.0.1030, 255,400 bytes, signed by Qihoo 360 Software (Beijing) Company Limited, with SHA-256 d2995b2ec2e1da5925fb2f6458e7837ce68de8953a131df89cf2d89a08a47f65 and a 0% detection result in Gridinsoft’s 2026 submission. Those values apply only to that exact file.
What is smlproxy64.exe?
SMLProxy64.exe is recorded as the original filename of a 64-bit Windows helper associated with the 360 software product line. In the analyzed sample, the visible executable name was GRouter86.exe while its version information listed SMLProxy64.exe as the original name. The metadata identified company 360.cn, product 360软件小助手, and file version 2.0.0.1030.
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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →“Original filename” is metadata embedded by the program’s builder; it is not a promise that every file currently called SMLProxy64.exe came from the same publisher. An installer can rename a file, copy it into another folder, or leave a same-named file behind after an incomplete removal. Treat the name as a clue that tells you what to investigate, not as a safety certificate.
What the published reference sample contains
| Property | Reference value | How to use it |
|---|---|---|
| Internal/original name | SMLProxy64.exe | Explains the relationship to a file displayed as GRouter86.exe. |
| Associated product | 360软件小助手 | Look for a corresponding 360 installation, service, updater, or scheduled task. |
| Company metadata | 360.cn | Supporting metadata, not a substitute for signature validation. |
| File version | 2.0.0.1030 | Useful when comparing the local Details tab with the reference build. |
| Size | 255,400 bytes | Only a comparison clue; another legitimate release can differ. |
| SHA-256 | d2995b2ec2e1da5925fb2f6458e7837ce68de8953a131df89cf2d89a08a47f65 |
Exact byte-level comparison for that submitted sample. |
| Signature | Verified; signer chain includes Qihoo 360 Software (Beijing) Company Limited | A valid chain supports the publisher identity for the signed bytes. |
| Published scan result | 0% detection for the submitted sample | Applies to that hash, not to every same-named executable. |
The sample data was published in Gridinsoft’s Malware Check in 2026. A different hash, file version, byte count, signer, or path means you are evaluating a different evidence set.
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Is smlproxy64.exe safe, or is it a virus?
There is no filename-only answer. A copy that matches the documented hash, carries a valid Qihoo 360 signature, and belongs to an installed 360 component is consistent with the known helper sample. A same-named file in a writable or unexpected directory, with no valid signature or an unrelated parent process, should be treated as untrusted until it has been quarantined and scanned.
Security analyst Brendan Smith summarizes the required test: “A GRouter86.exe filename must be checked against its path, publisher signature, hash, and parent software.” The same logic applies when Windows displays the internal name SMLProxy64.exe. A clean result for one submission cannot certify a renamed, replaced, modified, or bundled copy on your computer.
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Signals that support a legitimate copy
- The file opens from the installation directory of a 360 product you deliberately installed.
- Properties shows a valid digital signature whose signer is Qihoo 360 Software (Beijing) Company Limited, with a certificate chain Windows accepts.
- The Details tab contains the expected product and version information, or documentation from your installed release explains the difference.
- The SHA-256 value matches the exact reference build you intend to compare, rather than merely sharing the same filename.
- Task Manager identifies a 360 updater, service, or application as the parent process.
Signals that require quarantine and investigation
- The path is Temp, Downloads, Startup, an unfamiliar AppData subfolder, or another location that an installer or user can write to freely.
- The signature is absent, invalid, expired without a valid timestamp, or issued to a publisher unrelated to 360.
- The file appears after an unknown download, browser extension, crack, or bundled installer.
- The parent process, service, or scheduled task has no recognizable connection to software you chose to keep.
- A security product reports a threat or the executable attempts to return after you remove its parent application.
Path is a risk signal, not standalone proof of malware. Conversely, a valid-looking name or icon is not proof of legitimacy; attackers can copy metadata or use a familiar name.
How do I find the real file and its path?
Start with the running process rather than searching the disk for every file with the same name. This ties the path to the instance that generated the Windows message or consumed system resources.
- Press Ctrl+Shift+Esc to open Task Manager. If the compact view appears, select More details.
- On Processes or Details, locate SMLProxy64.exe or GRouter86.exe. Right-click it and choose Open file location.
- Copy the complete folder path from File Explorer’s address bar. Record the drive letter and every directory; do not rely on a shortened display name.
- Right-click the executable, choose Properties, and keep the path visible while you inspect the file’s metadata and signature.
If the process has already exited, use the exact path from the error dialog, an Event Viewer entry, or a startup item. Do not launch a search-result copy just to see whether it opens.
How do I check the publisher and digital signature?
A signature links the file’s current bytes to a publisher certificate. It is stronger evidence than the filename, but it still needs to agree with the path and parent software.
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- In Properties, open the Digital Signatures tab. Select the signature and choose Details.
- Confirm that Windows reports the signature as valid and that the signer is Qihoo 360 Software (Beijing) Company Limited for the reference sample.
- Open View Certificate if you need to inspect the certificate chain and validity dates. A missing tab, an invalid status, or a different signer is a mismatch, not a harmless variation to ignore.
- Return to the Details tab and compare the product, company, original filename, and file version with the software installed on your PC.
Do not “fix” an invalid signature by downloading a replacement executable from an EXE-download site. Preserve the suspect file for scanning or quarantine and repair the parent installation instead.
How do I compare the SHA-256 hash?
Hash comparison is useful only when you are trying to identify the same build. Equality means the local bytes match the reference bytes; a different value simply means the published verdict does not apply.
- Open File Explorer and copy the full path from the file’s Properties window.
- Open Windows PowerShell from the Start menu. At the prompt, run
Get-FileHash -Algorithm SHA256 -LiteralPath "C:fullpathSMLProxy64.exe", replacing the example path with your recorded path. - Copy the value in the
Hashcolumn and compare all characters withd2995b2ec2e1da5925fb2f6458e7837ce68de8953a131df89cf2d89a08a47f65. - Record the result with the file’s size, version, signer, and path. A hash match without the expected parent software still warrants checking how the file arrived on the computer.
Do not infer that a near match is acceptable. One changed byte produces a different SHA-256 value. Also do not reject a legitimate newer release solely because it has a different hash; the reference value identifies one published sample, not every 360 release.
How do I identify the parent program that launches it?
The parent relationship often explains both a normal startup and a file that keeps returning. In Task Manager, right-click the process and inspect Open file location; then check the 360 application, updater, service, or scheduled task that owns that directory or starts the executable.
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Open Settings > Apps > Installed apps on current Windows versions, or Control Panel > Programs and Features on older versions. Search for the 360 product named in the installation and note whether it is wanted, recently updated, or unfamiliar. The exact product name can vary by release, so compare the publisher and install location rather than relying on a single label.
Check startup and services cautiously
In Task Manager’s Startup apps tab, look for an entry pointing to the recorded path. For services, open the Windows Services app and inspect the executable path in a service’s properties; do not stop or delete a service merely because its name contains “360.” If you find an unknown entry, write down its path and publisher, then scan before changing it.
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Check scheduled tasks
Open Task Scheduler and review tasks created by the corresponding 360 product or updater. A task that launches a file from an unexpected writable folder, or that remains after the parent product is removed, is a persistence clue. Export or photograph the task’s action and trigger before disabling it so you can reverse the change if the entry belongs to software you intend to keep.
How do I remove a legitimate 360 installation I no longer want?
Uninstall the parent application through Windows instead of deleting only SMLProxy64.exe. Removing the child can leave an updater, service, or scheduled task that recreates it.
- Save work and close the 360 application.
- Open Start > Control Panel > Programs and Features, as described in the official 360 FAQ, or use Settings > Apps > Installed apps where that entry is available.
- Select the installed 360 product, choose Uninstall, and follow its supported removal wizard. Read each prompt so you do not remove a different security product.
- Restart Windows when the uninstaller requests it.
- After reboot, repeat the path and parent checks. Confirm that the executable, its startup entry, service, and scheduled task are gone before deleting leftover folders.
- Run a full security scan if the file returns, if the uninstaller was interrupted, or if you never knowingly installed the parent product.
If the program is wanted but the helper is producing errors, use the product’s repair or update option first. Do not substitute a random copy of SMLProxy64.exe; the correct repair files must come from the parent application’s supported installer.
What should I do when the copy does not match the reference?
Keep a mismatched file blocked or quarantined while you investigate. A different hash alone does not prove malware, because software can have multiple builds, but a different hash combined with an unexpected path, invalid signature, or unknown parent is enough to avoid running it.
- Disconnect the computer from unnecessary networks if the process is actively launching unknown children or making suspicious changes. Keep access available for updating your security software when needed.
- Use your installed security product to run a full scan, not just a quick check. Allow it to quarantine detections and preserve the detection name for later troubleshooting.
- Review Task Manager startup entries, Services, and Task Scheduler for actions pointing to the same path or recently created files.
- Check the parent installer chain. Remove an unwanted application through its uninstaller, then rescan after restarting.
- Do not restore the file simply because Windows reports that a program is missing it. Restore only after the parent is verified, the file’s signature and path make sense, and the scan gives you a reason to trust it.
360’s security guidance recommends combining manual Windows checks with dedicated malware scanning. If the file is part of a business or gaming PC managed by someone else, give the administrator the path, hash, signer, parent process, and scan result instead of deleting system-wide entries yourself.
How do I fix a smlproxy64.exe startup or missing-file error?
First identify which component is requesting the file. Windows error text can name a deleted helper even when the real problem is a damaged 360 installation, an orphaned startup entry, or an unwanted program that was only partially removed.
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When you still use the 360 product
- Record the full path shown by the error or startup entry.
- Open the 360 product’s own repair, update, or reinstall function if it provides one.
- Restart and check whether the error returns.
- If repair fails, uninstall the parent through Windows, restart, and install a current copy only from the publisher’s supported channel.
When you do not use the product
- Uninstall the obsolete 360 entry from Programs and Features or Installed apps.
- Disable the corresponding startup item or scheduled task after confirming its path.
- Restart, check for the error again, and remove leftover folders only after the process and parent entries are gone.
- Run a full security scan if the request originated from an unexpected location or the executable reappears.
There is no single universal installation directory or complete error-code list that applies to every 360 release. The observed path, signature, hash, version, and parent relationship must determine which repair branch is safe.
Why does smlproxy64.exe keep coming back after I delete it?
The usual explanation is that the parent 360 application, updater, service, or scheduled task is still installed. A persistence entry can recreate the helper at the next sign-in, reboot, update check, or repair operation. Deleting the executable therefore treats the symptom, not the component that owns it.
Find the process’s parent and inspect the installation’s startup, service, and scheduled-task entries. If you want the software, repair it; if you do not, uninstall it and then verify that no legitimate updater remains. If the recreated file changes path, loses its signature, or appears under an unknown parent, quarantine and scan before allowing it to run.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Can I safely delete SMLProxy64.exe?
Delete it only after you have identified its parent and decided that the parent software is unwanted or the file is an untrusted copy. For a legitimate installation you still use, deleting the helper can break updates or cause the parent to recreate it. For a suspicious copy, quarantine through your security product first so the evidence and recovery option are preserved.
After an intentional uninstall, restart Windows and confirm that no process, service, startup item, or scheduled task references the path. If a leftover file is locked, do not force deletion by disabling security protections; finish the supported uninstall and rescan instead.
How should I compare two SMLProxy64.exe files?
Use the same five fields for both copies and interpret them together rather than ranking one clue above all others.
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| Comparison | What a match tells you | What a mismatch means |
|---|---|---|
| SHA-256 | The bytes are identical to the reference or to each other. | The files are different; the reference scan cannot be transferred. |
| Digital signer | The signed bytes are attributed to the same publisher. | Investigate an unsigned, invalid, or unrelated publisher copy. |
| Full path | Both copies occupy the expected installation context. | An unexpected writable location raises risk. |
| File version | The builds appear to be the same release. | Could be a legitimate release difference or an altered file. |
| Parent process | Both are launched by the same known 360 component. | An unknown parent or persistence entry needs investigation. |
For an exact comparison, collect the five values before moving either file. This avoids losing the information needed to explain why one copy runs and the other triggers an error.
What should I do before restoring a quarantined copy?
Confirm that the parent application is installed and wanted, identify the quarantine item’s original path, and compare its signer and hash with the build you expect. A restore is reasonable only when the parent relationship is documented, the file came from a trusted installation, and a current full scan gives no warning. If any of those checks fail, leave it quarantined and repair or reinstall the parent instead of extracting the executable manually.
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Frequently Asked Questions
Is GRouter86.exe the same file as SMLProxy64.exe?
The documented sample lists GRouter86.exe as the displayed name and SMLProxy64.exe as its internal/original filename. Confirm the relationship on your own copy through Properties, the hash, and the parent 360 component rather than assuming every file with either name is identical.
What if my hash is different but the Qihoo 360 signature is valid?
A different hash means your bytes are not the published sample, but it may still be another signed release. Check the installed product, version, path, and certificate details, then obtain release-specific guidance from the product’s supported installer or administrator.
Should I disable my antivirus while repairing a missing SMLProxy64.exe file?
No. Keep security protection enabled and use the parent application’s repair or reinstall process. Disabling protection removes an important check precisely when the file’s origin or path is uncertain.
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360 products and releases can use different installation layouts, and the available documentation does not establish one universal directory. The path on your machine must therefore be evaluated alongside signer, hash, version, and parent process.
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